This talk takes place on MS Teams, please contact the organiser for more information about how to join the meeting.

Abstract:
In this talk, I argue that the model of semantic universals and variation in terms of complexity/informativeness trade-off (Kemp & Regier, 2012; Regier et al., 2015; Kemp et al., 2018) is applicable to the domain of Boolean connectives. In particular, I propose that the model explains the cross-linguistic absence of the connective NAND, once we incorporate the theoretical insights from Horn (1972) (cf. also Katzir and Singh, 2013). The lack of NAND follows if languages optimise the trade-off between (a) simplicity of the lexicon mea- sured by the number of propositional logic symbols necessary to express the meaning of the connectives and (b) informativeness of the lexicon measured by how much it facilitates accurate transfer of information, given scalar implicature. This model is essentially a reformulation of the explanations proposed by Horn (1972) and Katzir and Singh (2013), but has advantages over them in two respects: it rules out several unattested inventories that are not ruled out by Horn/K&S and it can be generalised to possible languages consisting of connectives among all 16 boolean connectives, not just the four ‘corners’ of the square of opposition, i.e., AND, OR, NOR, and NAND.

QuSoft’s lustrum covers the first three weeks of December, with Opening day on December 3, Science Week from December 7 to 11, and Business and Society Day on December 17. Opening Day will be presented by Jim Jansen, editor in chief of the popular science magazine New Scientist. And among the keynote speakers are renowned scientists such as Ignacio Cirac, Dorit Aharonov and Gilles Brassard. Also Freeke Heijman from Quantum Delta NL will speak and Christian Schaffner is invited to talk about the new quantum innovation hub Quantum.Amsterdam.

The talk by Philip Kremer that was scheduled for Wednesday 16 December has been cancelled due to personal circumstances. The talk will be rescheduled at a later date.

The workshop will take place on Monday, December 14th 2020 from 09:50 to 12:50 and from 15:00 to 18:00. The workshop is associated to the PhD defense of Ilaria Canavotto.

Abstract:
Proof-theoretic semantics aims to explain the meaning of the logical constants in terms of the inference rules that govern their behaviour in proofs. One of its central concepts is that of harmony: roughly, the match between the rules stipulating the conditions for introducing a logical constant in a proof and those for eliminating it from a proof. There are many accounts of harmony, most of them are developed against a background that assumes the rules of Identity and Cut, taken to codify the reflexivity and transitivity of logical consequence. We have argued elsewhere that the proof-theoretic project should be approached relative to a logic, i.e., relative to a consequence relation, and that the consequence relation relevant for proof-theoretic semantics is the one given by the sequent-to-sequent derivability relation in Gentzen systems. This relation is always reflexive, monotonic, and transitive, but it being so does not depend on the availability of sequent rules codifying these properties. In this talk we investigate the prospects for an account of harmony adequate for logics that lack the structural rules of Identity and Cut.​

The talk will take place on MS Teams. Please contact the organizers for information about how to join the online meeting.

QuSoft’s lustrum covers the first three weeks of December, with Opening day on December 3, Science Week from December 7 to 11, and Business and Society Day on December 17. Opening Day will be presented by Jim Jansen, editor in chief of the popular science magazine New Scientist. And among the keynote speakers are renowned scientists such as Ignacio Cirac, Dorit Aharonov and Gilles Brassard. Also Freeke Heijman from Quantum Delta NL will speak and Christian Schaffner is invited to talk about the new quantum innovation hub Quantum.Amsterdam.

Speakers: Zoé Christoff (University of Groningen) and Aybüke Özgün (University of Amsterdam).

QuSoft’s lustrum covers the first three weeks of December, with Opening day on December 3, Science Week from December 7 to 11, and Business and Society Day on December 17. Opening Day will be presented by Jim Jansen, editor in chief of the popular science magazine New Scientist. And among the keynote speakers are renowned scientists such as Ignacio Cirac, Dorit Aharonov and Gilles Brassard. Also Freeke Heijman from Quantum Delta NL will speak and Christian Schaffner is invited to talk about the new quantum innovation hub Quantum.Amsterdam.

Φ-Math is a philosophy of mathematics reading group created by MoL students, open to any enthusiast! We meet once every two Fridays to discuss a text on philosophy of mathematics, be it a classic paper or a new heterodox perspective on the subject. Besides, we also host other philosophy of mathematics related events that require no readingpreparation. The group gives priority to the interests of its members, urging them to choose the content and the structure of its activities.

For the upcoming reading session, we expect attendants to have read in advance: Benacerraf, Paul. "What Numbers Could Not Be." The Philosophical Review 74, no. 1 (1965): 47-73. The article can be accessed freely by University of Amsterdam students through JSTOR, by logging in with the institution.

Despite wide variation among natural languages, there are linguistic properties universal to a large collection of languages. An important challenge is to explain why these linguistic universals hold. In this talk we look at semantic universals in the domain of quantifiers, related to the properties of monotonicity, quantity and conservativity. We investigate whether these semantic universals could be explained by differences in quantifier complexity. We present a large-scale study (work in progress) of quantifiers and their complexity, in which we examine whether the quantifier properties of monotonicity, quantity, and conservativity can be predicted by quantifier complexity / simplicity. We look at two measures of complexity: compressibility (by a lossless compression algorithm) and minimal expression length within a logical grammar.

To join the meeting, please click https://uva-live.zoom.us/j/87833660729.

Please note that this talk has been rescheduled from 19th November to 26th November.

On Thursday, the 26th of November from 1pm to 4pm, the Dutch Institute for Emergent Phenomena (DIEP) is organising a series of virtual talks by the DIEP fellows and researchers who will be joining DIEP@UvA soon. ILLC is the host institute for one of these fellows, Soroush Rafiee Rad, who will give a talk on “Characterizing Probabilistic Models with a Symmetry Axiom”.  The topics covered by the talks include multiscale modelling of reaction-diffusion networks, self-learning algorithms in duopoly, axiomatic approaches to probabilistic models, and many-body stochastic systems.

Some philosophers (like Kevin Scharp) have proposed that concepts themselves--not just the propositions or beliefs they figure into--can be inconsistent, and thereby defective. Others (like Herman Cappelen) have rejected this proposal for relying on inferentialism. I argue that what's needed for the proposal is not inferentialism, but rather bilateralism. This means that even those of us are not inferentialists can take this kind of inconsistency to be a source of conceptual defectiveness. However, I also argue that we are left with a puzzle for explaining what would make this kind of inconsistency a defect.

Formerly speaking: Matteo Mio (ENS de Lyon)

Abstract. *All truths are knowable* appears to entail that *all truths are known*; this is Fitch's paradox. Recent work has generalised the paradox; e.g. *all truths are believable* entails that *all beliefs are true* and *all knowledge is correctly assertible* entails that *all assertions are correct*. I suggest a general strategy to resolve such paradoxes. The suggestion is that "-able" should be understood dynamically with a backward-looking component. In case of the Fitch paradox, my suggestion is that *p is know-able* means that there is some act that, if executed, imparts the knowledge that *before the act was executed, p*. The modal flavour of such *-able* varies with what the relevant acts are (alethic = possible acts; deontic = permitted acts; etc). In the talk, I lay out the different "Fitch-like" problems, conceptually defend the dynamic/backward strategy (which I trace to the work of Dorothy Edgington on the Fitch paradox) and sketch the general a logical framework to implement this strategy.

Zoom link: https://uva-live.zoom.us/j/82405276346

Speakers at the launch event will be Irene Zwiep (Director of the Amsterdam Institute for Humanities Research), Thomas Poell (Co-Director RPA Global Digital Cultures), Sonja Smets (Member Steering Board RPA Human(e) AI), and Peter Sloot (director IAS). Beate Roessler (Chair Department of Philosophy), Huub Dijstelbloem (Philosophy and WRR), Marjolein Lanzing (Philosophy) will be moderating the discussion.

Vector space, as a mathematical structure, is perhaps much more understood by human beings than any other field of mathematics, and it finds its natural usage in a number of wildly different areas, including physics, computer science, numerical analysis, linguistics, to name a few. Logic, on the other hand, is the canonical tool for talking about and reasoning in different structures. Given that vector space is used as the fundamental structure at various places, a complete analysis of it using logical tools and the development of logical systems with vector space models will be beneficial.

The goal of this workshop is to bring together worldwide scholars who share a common interest in this topic but with varying perspectives, collaborating to develop tools for logical analysis of vector spaces or logical systems with vector space models. We hope this workshop will broaden our views on the matter of subject, and ultimately put logic and logical methods in a place of wider applications.

On the occasion of the PhD defense of Marco Del Tredici, we are organising an online mini-symposium on meaning variation in social contexts with talks by Dirk Hovy (Bocconi University), Katia Shutova (University of Amsterdam), Katrin Erk (University of Texas at Austin), and Mario Giulianelli (University of Amsterdam). Everybody is welcome to join. You can find more information, including abstracts, on the website of the Computational Linguistics Seminar (CLS). Zoom details will be distributed via the CLS mailing list shortly before the event.
Marco’s PhD thesis "Linguistic Variation in Online Communities: A Computational Perspective” will be defended on Friday the 6th of November at 16:00 and the public ceremony will be live-streamed via YouTube. Contact Marco at marcodeltredici at gmail.com for more details if you are interested in attending.

The Causal Inference Lab will meet on Monday 26 October at 15:00 to read Kirfel & Lagnado (2018), 'Statistical norm effects in causal cognition' [pdf].

All those interested in discussing the paper are welcome to join.

LoC online seminar session on Wednesday, October 21: Hans Rott (University of Regensburg)

 on Difference-making conditionals and the Relevant Ramsey Test

This event is organised by Career Service together with individual research institutes. All PhD candidates and postdocs are invited. For each Career Lunch we invite 3-4 guest to share their career story: How did they take decisions about their future after their PhD or postdoc, what do they currently do and how are their PhD skills being valued? After a brief introduction, you will have the opportunity to ask your questions or get inspired by questions asked by your fellow participants.

Guests 15 october:
1. Rianne van den Berg, Research scientist at Google Brain
2. Jakub Zavrel, founder of Zeta Alpha

In this talk, I'll discuss an approach to language understanding in which a neural-network-based agent is trained to associate words and phrases with things that it learns to see and do.

The Causal Inference Lab will meet to discuss Michael Tessler & Noah Goodman, Learning from Generic Language [doi:10.31234/osf.io/hnm8p].

To join the meeting, click https://uva-live.zoom.us/j/85927230872. All those interested in discussing the paper are welcome to join.

While ‘most’ and ‘more than half’ are generally assumed to be truth-conditionally equivalent, the former is usually interpreted as conveying greater proportions than the latter. Previous work has attempted to explain this difference in terms of pragmatic strengthening or variation in meanings. In this talk, we propose a novel explanation that keeps the truth-conditions equivalence. We support this explanation with a computational model of usage in the Rational Speech Act framework. We find that the difference in typical proportions associated with the two expressions can be explained with previously independently motivated semantic and pragmatic mechanisms.

Building on the pioneer intuitions of Floyd-Hoare logic, dynamic logic was introduced in the 70's as a suitable logic to reason about, and verify, classic imperative programs. Since then, the original intuitions grew to an entire family of logics, which became increasingly popular for assertional reasoning about a wide range of computational systems. Simultaneously, their object (i.e. the very notion of a program) evolved in unexpected ways. This lead to dynamic logics tailored to specific programming paradigms and extended to new computing domains, including probabilistic, continuous and quantum computation. Both its theoretical relevance and practical potential make dynamic logic a topic of interest in a number of scientific venues, from wide-scope software engineering conferences to modal logic specific events. However, no specific event is exclusively dedicated to it. This workshop aims at filling fill such a gap, joining an heterogeneous community of colleagues, from Academia to Industry, from Mathematics to Computer Science.

Invited Speakers: Natasha Alechina and Johan van Benthem.

Given the worsening epidemiological situation, the organizers have decided to hold DaLi as an online workshop via Zoom.

This talk has been cancelled.

The Centrum Wiskunde & Informatica (CWI) of the NWO Institute Organisation and the Institute for Logic, Language and Computation (ILLC) of the University of Amsterdam were organizing a symposium on the occasion of the retirement of Jos Baeten as general director of CWI and professor of theory of computing of ILLC on Thursday 1 October 2020.

The symposium had to be cancelled because of tighter coronavirus   restrictions in the Netherlands.

The Causal Inference Lab will meet to discuss Ciara Willett & Benjamin Rottman (2019), The accuracy of causal learning over 28 days [pdf].

Anyone with an interest in causal inference is welcome to join. To join the meeting, click the Zoom link: https://uva-live.zoom.us/j/98650832578

This opening address of the conference will be publicly accessible via https://tinyurl.com/Asking-Answering

ELLIS is a pan-European initiative that aims at building a stronger Machine Learning and Artificial Intelligence research community in Europe, by creating a diverse network of ELLIS units all throughout Europe. These units host the strongest researchers in these fields, who will collaborate in an effort to shape how machine learning and artificial intelligence will change the world.

We are proud to present that Amsterdam will be the home of an ELLIS unit, as made possible by a substantial financial contribution of the University of Amsterdam. The unit counts 20 faculty members of different institutes at the UvA and is directed by Max Welling, founding board member of the ELLIS society. Along with 29 other new ELLIS units, the Amsterdam unit will be officially launched on September 15. In the prestigious launch event, each new ELLIS unit will present its research focus in a short video. The event is open to the general public via live streaming. A detailed agenda and the YouTube link will be posted shortly on the event's website.

The ABC Networking Day provides you with the opportunity to discover all research treasures that ABC holds, and connect with other ABC researchers. All researchers (PhDs, post-docs, assistant/associate/full professors) are invited to attend and actively participate.

The Networking Event will consist of:
* ABC Pitch talks: Flash talks that are all about getting to know each other, to foster fresh collaborations, and, possibly, to team-up for grant proposals. In small groups you present your research and/or listen to and discuss all the great research ABC has to offer
* Networking session: in an informal atmosphere, the discussions continue in break-out rooms. These are small gatherings focused on a certain topic or just to get to know each other, it’s up to you!

Note: this seminar starts one hour later than usual.

The Causal Inference Lab reading group will meet on Friday to discuss Sven Lauer & Prerna Nadathur (forthcoming), Causal necessity, causal sufficiency, and the implications of causative verbs [click here for the pdf].

All those with an interest in causal inference are very welcome to attend. To join the meeting, click https://uva-live.zoom.us/j/96825069179.

At 18:00, there will be a short presentation about research internships offered by Amsterdam-based company Pacmed (https://pacmed.ai/en), and at 18:30 Flavia Nährlich will give a talk on Comparative Illusions - How one sentence can challenge fundamental principles in linguistics. The Zoom meeting ID will be provided on the cool logic website shortly before the talk.

Abstract:
Certain comparative sentences like "More people have been to Russia than I have." are known as so-called comparative illusions. Native speakers of English judge these statements as acceptable, i.e. report that they are proper English sentences with a coherent interpretation. However, it turns out that people struggle to articulate that interpretation. In fact, it is not clear at all if there is a coherent meaning that we can assign or where the illusion of grammatical correctness originates from. This challenges some of our most basic assumptions about language architecture, like that we perceive sentences veridically, interpret them fully and that sentence form and meaning are tightly coupled. During the talk, I will present a possible solution for all these problems, the category mismatch hypothesis, I developed based on existing experimental data and some German examples.

Zoom link: https://uva-live.zoom.us/j/92250640302

The seminar is jointly organised with TULIPS of Utrecht University and more information can be found on their webpage: https://tulips.sites.uu.nl/upcoming-talks/. Note: pre-registration is required and can be done by sending Johannes Korbmacher (j.korbmacher at uu.nl) an email.

AAMAS is the leading scientific conference for research in autonomous agents and multi-agent systems. The aim of the joint conference is to provide a single, high-profile, internationally-respected archival forum for scientific research in the theory and practice of autonomous agents and multi-agent systems.

AAMAS-2020 will take place online on 11-13 May 2020, with all talks being freely available to everyone (including several contributions by ILLC researchers!).

MLC Seminar presented by members of the Causal Inference Lab

Speaker: Ivar Kolvoort, Patricia Mirabile and Dean McHugh.

We will meet to discuss chapter 6 form Anthea Schöller’s dissertation "How Many are many? Exploring Context-Dependence of few and many with Probabilistic Computational Models".

You can join us vis Zoom: https://uva-live.zoom.us/j/99989094626.

The meeting “Quantum and Beyond” on 28 and 29 April 2020, is devoted to recent logical and foundational investigations that have been inspired by quantum theory. After the pioneering approach of Birkhoff and von Neumann in the Thirties, the quantum theoretic formalism has suggested the development of new logical ideas that have been successfully applied to different fields: fuzzy and epistemic logics, quantum information and quantum computation theories, semantics of natural and artistic languages, pattern recognition and machine learning, cognitive sciences.

The Causal Inference Lab reading group will meet this week to discuss Eric Hiddleston (2005), Causal powers [doi:10.1093/phisci/axi102]. The meeting can be accessed at https://uva-live.zoom.us/j/91405843425.

All those with an interest in causal reasoning are very welcome to attend.

This is the first announcement of a new weekly online seminar series on Computability Theory and Applications that is scheduled to start on 21 April 2020 on the conference platform Zoom.

Do you want to work with our systems, but do you lack the required knowledge? We regularly organize hands-on system trainings at our SURF office in Amsterdam.

Trainings will take place online until further notice due to the COVID-19 regulations.

The Causal Inference Lab will meet online this Friday to discuss Jonathan Phillips, Jamie Luguri & Joshua Knobe (2015), Unifying morality’s influence on non-moral judgments: The relevance of alternative possibilities [doi:10.1016/j.cognition.2015.08.001]

All those with an interest in causal inference are very welcome to attend.

Argumentation and exchange of information help groups to coordinate, deliberate and decide. On the other hand, debates often generate detrimental large-scale phenomena such as polarization, informational cascades and echo-chambers, where the behavior of entire groups shifts in seemingly irrational ways.

Understanding the deep mechanisms of informational and social influence that underlie these phenomena in the age of social media is a challenge that engages methods from different disciplines, including philosophy, artificial intelligence, computer and social sciences and psychology.

This workshop brings together scholars with different theoretical approaches. Its broader aim is to foster an interdisciplinary understanding of the mechanisms that determine the behavior of individuals in a social context from multiple perspectives. The workshop will last two and a half days. The first half-day of it will be dedicated to an introductory seminar on abstract argumentation, held by Professor Pietro Baroni (Brescia).

Due to the spreading of COVID-19, this workshop will be held online as a video-conference-only.

Patricia Mirabile, a new PostDoc at the ILLC, will present this Friday via Zoom at the Meaning, Language and Cognition (MLC) seminar.  To join the meeting, please click the following link: https://zoom.us/j/703591008

The Causal Inference Lab reading group will meet this Friday to discuss two papers on the problem of causal selection (determining how people select, from a myriad of events, only some as causes). We will discuss two papers: Julia Driver (2008), Attributions of causation and moral responsibility [copy of book chapter], and Christopher Hitchcock & Joshua Knobe (2009), Cause and norm [doi:10.5840/jphil20091061128] [preprint].

Everyone with an interest in causal inference is very welcome to join!

This talk will be delivered in an online-only format, via the platform Zoom. To join the meeting, please click the following link: https://zoom.us/j/773519367.

Certain comparative sentences like "More people have been to Russia than I have." are known as so-called comparative illusions. Native speakers of English judge these statements as acceptable, i.e. report that they are proper English sentences with a coherent interpretation. However, it turns out that people struggle to articulate that interpretation. In fact, it is not clear at all if there is a coherent meaning that we can assign or where the illusion of grammatical correctness originates from. This challenges some of our most basic assumptions about language architecture, like that we perceive sentences veridically, interpret them fully and that sentence form and meaning are tightly coupled. During the talk, I will present a possible solution for all these problems, the category mismatch hypothesis, I developed based on existing experimental data and some German examples.

The Causal Inference Lab reading group will meet this Friday afternoon to discuss the problem of causal selection (when moral and other factors influence what events are selected as causes). We will discuss Thomas Icard, Jonathan Kominsky & Joshua Knobe's 2017 paper 'Normality and actual causal strength' [doi:10.1016/j.cognition.2017.01.010] [preprint]

Everyone with an interest in causal reasoning is very welcome to join the discussion.

LIRa has switched to an online-only format, using the platform zoom.us. Contact ansolaki at gmail.com in case you have questions about the new format. The link for the e-seminar session is: https://zoom.us/j/424666901?pwd=RDEydDA5dEszV3p4Tmc2ZHo4YlNudz09

On Friday the 6th of March the Institute for Logic, Language and Computation is organising a memorial event in honour of Anne Troelstra.

The semantic literature on question-embedding predicates has generally focused on the restrictions of certain predicates and the complements they can take as argument. However, the discussion becomes even more convoluted when we take the analysis cross-linguistic. My presentation explores the `que+ indirect question' construction that exists in Spanish, but not in English. The construction allows for a Spanish speaker to use a larger set of verbs to unambiguously report a question than the English speaker, and proves that a more detailed analysis of question-embedding predicates is needed. I will introduce this construction, explore some possible explanations for why certain verbs allow the construction while other prohibit it, and show why this puzzle is not merely a semantic one, but a syntactic one. It's going to be very verby!

On Friday the Causal Inference Lab reading group will meet to discuss the following paper Laura Franklin-Hall (2015), Explaining causal selection with explanatory causal economy. Click here for a preprint (doi: 10.1007/978-94-017-9822-8_18).

Everyone with an interest in causal inference is very welcome to attend!

It is commonly assumed that assertions can be weakened or strengthened. In this talk I will identify two linguistic strategies that lead to the impression of changing assertoric strength and that are arguably embodied in the structure of assertive clauses. I will argue for a specific syntactic implementation, postulating a “Commitment Phrase” that takes a “Judgement Phrase” as a complement, which can house different linguistic modifiers or head features. I will show that a semantic interpretation format in which judgement and commitment operators are just treated as non-at-issue meanings on a separate level of semantic interpretation is not sufficient and argue for a theory in which those operators are conceived as means to put the core proposition into the common ground.

The ILLC has a new lecture series, the Meaning, Language and Cognition (MLC) seminar, presenting research relevant to the Logic and Language group. The first speaker of the MLC seminar will be Jos Tellings (Utrecht), discussing when 'if' or 'when' are specifying modals.

Abstract. In this talk I analyze a construction in which specificational 'namely' takes a modal expression as antecedent, and an if- or when-clause as argument (example: "Working as a filmmaker can be taxing, namely if you're required to get sleek product shots"). Such cases do not satisfy previously claimed generalizations about the behavior of 'namely' in Anderbois & Jacobson (2018) and Onea (2016). Moreover, they show that modal expressions can raise an implicit question that gets answered by an if/when-clause. Not all types of modals allow this – I argue it is restricted to Portner's (2009) category of "quantificational modals". This work gives insights into the inquisitive character of modal operators: following Portner's (2009) proposal for quantificational modals, we find a difference in inquisitiveness between quantifying over situations and quantifying over worlds.

Abstract:
I would like to present ongoing work on intuitionistic modal logics iGL and iSL which have a close connection to the (unknown!) provability logic of Heyting Arithmetic. Classically, Gödel-Löb logic GL admits a provability interpretation for Peano Arithmetic. iGL is its intuitionistic counterpart and iSL is iGL extended by explicit completeness principles. I will characterize both systems via an axiomatization and in terms of Kripke models. The main goal is to understand their admissible rules in order to get insight in the structure of those logics. To do so, I want to focus on one step in this direction: Ghilardi’s wonderful result connecting projective formulas to the extension property in Kripke models.

In this talk, I will discuss our parser for semantic graphs such as Abstract Meaning Representation (AMR). Our approach combines neural models with mechanisms from compositional semantic construction. Key to this approach is the Apply-Modify (AM) algebra, which we developed to both reflect linguistic principles and yield a simple parsing model. In particular, the AM algebra allows us to find consistent latent compositional structures for our training data, which is crucial when training a compositional parser. The parser then employs neural supertagging and dependency models to predict interpretable, meaningful operations that construct the semantic graph. The result is a semantic parser with strong performance across diverse graphbanks, that also provides insights to the compositional patterns of the graphs.

In this talk, I will exposit the fundamental ideas underlying my current independent research project with Nick Bezhanishvili, in which I am attempting to give a choice-free topological representation of ortholattices. The standard topological representation of ortholattices, distributive lattices, and Boolean algebras, relies upon a nonconstructive choice principle, equivalent to the Boolean prime ideal theorem - which guarantees the existence of sufficiently many ultrafilters. My topological representation of ortholattices combines Bimbo's 2007 orthospace approach to choice-dependent Stone duality for ortholattices with Bezhanishvili and Holliday's 2020 spectral space approach to choice-free Stone duality for Boolean algebras. My aim for this talk is to give a gentle and welcoming overview of my research project and its surrounding subject matter.

This workshop brings together scholars working on the philosophy of language, philosophy of mathematics, philosophy of logic, and metaphysics, to present recent work on propositions, propositional functions, properties, sets, numbers, composite objects, and truth.

How can we ensure trust in machines? In particular, how can computational text analysis, an important sector of AI, ensure trust in its algorithms? The sector is booming, and its real-life applications ubiquitous. But how comfortable are you with having an AI assess whether your mum's calls to 112 are really urgent?  Having your brother defended by a legal AI? Have software decide whether you'll get the next grant? I bet your answers vary from 'not very much' to 'not at all': what do you think should happen to remedy this situation? Is this something that we, the ILLC community, substantially can contribute to? If so, how, ideally?

On the Lockean thesis one ought to believe a proposition if and only if one assigns it a credence at or above a threshold (Foley 1992). The Lockean thesis, thus, provides a way of linking sets of all-or-nothing beliefs with credences. Recent work on the lexical semantics of attitude verbs such a 'think’ and ‘believe’ suggest that Lockeanism is more plausible than the view that believing a proposition requires having full confidence in it (Hawthorne, Rothschild and Spectre, 2016). In this talk, I will give two independent characterizations of sets of full beliefs satisfying the Lockean thesis. One is in terms of betting dispositions associated with full beliefs and one is in terms of an accuracy scoring system for full beliefs. These characterizations are parallel to, but not merely derivative from, the more familiar Dutch book (de Finetti 1974) and accuracy arguments (Joyce 1998) for probabilism.

The Causal Inference Lab reading group will meet on Friday to discuss Patricia Cheng (1997), From Covariation to Causation: A causal power theory pdfs.semanticscholar.org/ac40/c59cc950959978c42fb0618b1458a93975a3.pdf.

All those with an interest in causal inference are very welcome to attend.

The ILLC Colloquium is a half-yearly festive event (either the New Year's Colloquium, the Midsummernight Colloquium or the Midwinter Colloquium) that brings together the three research groups at the ILLC. Each colloquium consists of three main talks by representatives from the Logic and Language group, the Language and Computation group and the Logic and Computation group, which are occasionally followed by Wild Idea Talks. The colloquium is concluded by a get together of the entire ILLC community.

The Tsimané are an indigenous people from Bolivia that have had relatively little contact with industrialised societies. Tsimané culture differs markedly from Western cultures and this has attracted interest from medicine to music. Adding to earlier reports of different consonance and rhythm perception, a study led by Nori Jacoby now suggests that Tsimané do not perceive octaves as equivalent. Should we reconsider the building blocks of music perception?

Jacoby, N., Undurraga, E. A., McPherson, M. J., Valdés, J., Ossandón, T., & McDermott, J. H. (2019). Universal and Non-universal Features of Musical Pitch Perception Revealed by Singing. Current Biology, 29(19), 3229-3243.e12. https://doi.org/10/ggbvj3

After the adoption of January 14 as the World Logic Day by the Executive Council of UNESCO on October 17, 2019, January 14 was officially proclaimed as the World Logic Day at the 40th session of the General Conference of UNESCO in Paris, November 12-27, 2019.

We encourage everybody to organize a celebration of the World Logic Day on January 14 2020 under the auspices of UNESCO. Info about all the celebrations will be gathered in a single webpage with links to all the celebrations in the world as it was done for the 1st edition.

Monotonicity, in various forms, is a pervasive phenomenon in logic, linguistics, and related areas. In theoretical linguistics, monotonicity properties are relevant to a large array of semantic phenomena  and to the presence of pragmatic inferences such as scalar implicatures. In logic and mathematics, monotonicity guarantees the existence of fixed points and the well-formedness of inductive definitions. Also, monotonicity is closely tied to reasoning, in formal as well as natural languages. Recent logical and linguistic work on monotonicity has also found its way into computation systems for natural language processing and cognitive models of human reasoning. The goal of our workshop is to bring together researchers working on monotonicity or related properties, from different fields and perspectives.

The first day of the workshop were to be devoted to two tutorials:
1. Jakub Szymanik (University of Amsterdam): Monotonicity in Logic
2. Gennaro Chierchia (Harvard University): Monotonicity in Language
The remaining two days were to consist of invited and contributed talks.

Due to the ongoing pandemic, the organizers have decided to reschedule TLLM 2020 online in December.

LANMR 2020 is the thirteenth edition of the Latin American Workshop series on Logic/Languages, Algorithms and New Methods of Reasoning. The aim of the workshop is to bring together researchers from academia and industry worldwide to present recent research results on theory and applications on Logic, Languages, Algorithms and Reasoning Methods. Researchers, engineers and experts are invited to submit high-quality papers to share and to discuss their latest research results.

After five workshops on connexive logics in Istanbul (June 2015), Raesfeld Castle (June 2016), Kyoto (September 2017), and Bochum (October 2018 and November 2019), a sixth workshop on connexive logics will take place in Bochum (Germany) on December 3 and 4, 2020.

Originally this workshop was to be held in Puebla (Mexico) from August 31st to September 2nd, 2020, and co-located with the Second Bilateral Meeting UNAM-UniCa on Analytic Philosophy happening in Mexico City on August 27th and 28th, 2020. The workshop was postponed and the venue changed due to the Covid-19 pandemic,

The Novembertagungis an international graduate conference on the history and philosophy of mathematics and neighbouring fields. It aims to provide an opportunity for graduate students at all levels to present and discuss their research in an informal and safe environment. It also allows young researchers to share experiences, get advice and establish new contacts.

On the theme: While Euclid (c. 3rd century BC) is usually celebrated as the beginning of axiomatic science, many features that are nowadays taken to be essential to axiomatics appear to be alien to ancient mathematics. A major contemporary change in the view on axiomatics was initiated by the adoption of the set-theoretic axiomatic framework as a foundation of mathematics in the first half of the 20thcentury. Proof theory and model theory subsequently developed as independent research fields and had a wide impact on philosophical thought.On the other hand, some philosophers also argue that the axiomatic view on mathematics may be harmful in that it omits fundamental aspects of mathematical practice and idealizes mathematical reasoning in an unfaithful way.

Due to the ongoing COVID-19 pandemic, the conference takes place online.

CoNLL is a yearly conference organized by SIGNLL (ACL's Special Interest Group on Natural Language Learning). This year, CoNLL will be colocated with EMNLP 2020, and like EMNLP will be a fully virtual conference. In this edition, we explicitly invite submissions that focus on theoretically, cognitively and scientifically motivated approaches to computational linguistics, rather than on work driven by particular engineering applications.

"Formal Philosophy 2020" is the 3rd annual international conference, organized by the International Laboratory for Logic, Linguistics and Formal Philosophy in National Research University Higher School of Economics, Moscow, Russia. Formal Philosophy-2020 will be dedicated to various topics in the field of formal epistemology, formal ontology, formal ethics, philosophy of logic, an epistemology of logic and other branches of formal and mathematical philosophy.

"Formal Philosophy 2020" is postponed until November 2020.

LENLS is an annual international workshop on formal syntax, semantics and pragmatics. It will be held online as one of the workshops of the JSAI International Symposia on AI (JSAI-isAI2020) sponsored by the Japan Society for Artificial Intelligence (JSAI).

Invited Speakers: Patrick Elliott (Massachusetts Institute of Technology) and Yohei Oseki (University of Tokyo).

Invited Speakers: Natasha Alechina, Ekaterina Komendantskaya, Samvel K. Shoukourian and Ilya Sergey. In addition there will be one invited industrial talk from Leading Research Center for Blockchain Technology of Innopolis University, which will be presented by Leonid Merkin, and a panel discussion on (experimental and industrial) contemporary programming languages.

Ontology matching is a key interoperability enabler for the Semantic Web, as well as a useful technique in some classical data integration tasks dealing with the semantic heterogeneity problem. It takes ontologies as input and determines as output an alignment, that is, a set of correspondences between the semantically related entities of those ontologies. These correspondences can be used for various tasks, such as ontology merging, data interlinking, query answering or navigation over knowledge graphs. Thus, matching ontologies enables the knowledge and data expressed with the matched ontologies to interoperate.

This International Semantic Web Conference (ISWC) Workshop has three goals: 1. To bring together leaders from academia, industry and user institutions to assess how academic advances are addressing real-world requirements. 2. To conduct an extensive and rigorous evaluation of ontology matching and instance matching (link discovery) approaches through the OAEI 2020 campaign. 3. To examine similarities and differences from other, old, new and emerging, techniques and usages, such as web table matching or knowledge embeddings.

The historical consensus seems to be that logic is somehow special.The traditionally exceptional properties of logic are that it is purely formal, has normative force, and that logical evidence is both foundational and a priori. Anti-exceptionalism about logic (AEL) is the denial of at least one of these properties. Our hope is that this Topical Collection advances the area of research, concentrating particularly on four important themes: Properties of Logic, Logical Methodology, Metaphysics of Logic, and Objections.

Guest Editors: Filippo Ferrari (University of Padua), Ben Martin (University of Bergen), Maria Paola Sforza Fogliani (School for Advanced Studies IUSS Pavia).

Epistemic planning is the enrichment of automated planning with epistemic notions, including knowledge and beliefs, which not only refer to incomplete knowledge, but also beliefs about this knowledge. Epistemic planning has promising application potentials in all types of domains requiring artificial agents that have skills both in planning and in reasoning about knowledge and beliefs (of themselves and others). Such applications include domestic robots interacting with humans, non-player characters in video games, and autonomous robots interacting in a factory setting. It is a relatively recent area of research, and is inherently multi-disciplinary involving research from automated planning, epistemic logic, and knowledge representation & reasoning.

Humanities Bulletin is a multidisciplinary peer-reviewed Journal which features original studies and reviews in the various branches of Humanities, including History, Literature, Philosophy, Arts.
This journal is not allied with any specific school of thinking or cultural tradition; instead, it encourages dialogue between ideas and people with different points of view. Our aim is to bring together different international scholars, in order to promote the dialogue between cultures, ideas and new academic researches.

ATVA 2020 is the 18th in the ATVA series of symposia intended to promote research in theoretical and practical aspects of automated analysis, verification and synthesis in Asia by providing a forum for interaction between the regional and international research communities and industry in the field.

Invited speakers: Tobias Nipkow (Munich, Germany), Klaus Havelund (CalTech / NASA JPL) and David Dill (Standford, USA).

The conference will take place online in Hanoi in a conference room as scheduled, since Hanoi City is not locked-down. We are encouraging local participants to take part in the conference. We also warmly welcome all the international participants in the case that they are able to travel to the conference site. For those participants and speakers who are not able to come to the conference site, they can attend and deliver their lectures/talks online.

Probability and Meaning (PaM) is a conference organized by the Centre for Linguistic Theory and Studies in Probability (CLASP).  PaM will bring together researchers interested in computationally relevant probabilistic approaches to natural language meaning. PaM will include symbolic, machine learning and experimental approaches to this task, as well as hybrid models.

After careful consideration of the pandemic situation, the conference is moving online. The registration for PaM2020 is now open and free.

The purpose of this workshop is to provide a forum for researchers to present work on specific foundational ontologies as well as foundational ontologies in general and their relations to each other and to the wider ontological enterprise. The 4th Workshop on Foundational Ontology (FOUST IV) is organised as part of the Joint Ontology Workshops and hosted by the Bolzano Summer of Knowledge.

Relevant topics include:

• Changes to existing foundational ontologies / extension by new modules
• Any specific category or topic usually covered by foundational ontology (e.g., functions, roles, time, mereology)
• Theoretical results about specific foundational ontologies (e.g., consistency proof of significant parts of an existing foundational ontology)
• Comparison and alignments of foundational ontologies
• Relationship between foundational ontologies and domain ontologies
• Applications of foundational ontologies in AI, Semantic Web, Linguistics, etc.

We are in the reality of natural and computational systems of argumentation provided by reasoning, with natural and artificial languages. Intelligent systems of argumentation target advanced methods for exchanging, saving, reasoning, accessing, and updating information in memory. There will be a Special Session on Natural Language and Argumentation 2020 (NLA'20) at DCAI'20, the 17th International Conference on Distributed Computing and Artificial Intelligence. This special session will cover both theories and applications.

Because of the coronavirus, we unfortunately won?t be able to meet in person. But we plan to have a virtual version of the workshop via Zoom. We hope that even though we can't have the usual nice meals, we will be able to do some good philosophy of math together as usual. The plan is to meet for several Wednesday afternoons in a row ('afternoon' from the point of view of the Eastern US time zone) during the month of October. Typical sessions will consist of two talks, with the details to be firmed up as the program takes shape.

Concept formation has recently become a widely discussed topic in philosophy under the headings of “conceptual engineering”, “conceptual ethics”, and “ameliorative analysis”. While recent philosophical discussions on concept formation have addressed natural sciences such as physics as well as various life sciences, so far there is only little direct engagement with the social sciences. To address this shortcoming is important because many debates about socially relevant concepts such as power, gender, democracy, risk, justice, or rationality, may best be understood as engaging in conceptual engineering. This topical collection addresses the nature and structure of concept formation in the natural and the social sciences alike, both as a process taking place within science and as an activity that aims at a broader impact in society.

We aim at expanding the scope of the philosophical debate about concept formation more generally. We will consider projects that use either a systematic, a historical, or an empirical approach. We are particularly interested in experimental-philosophical work (e.g., questionnaire studies, corpus analysis) that discusses its use and/or its consequences for explicating or engineering socially-relevant concepts.

"Concepts in Action: Representation, Learning, and Application" (CARLA) is an international workshop aimed at fostering interdisciplinary exchange about research on concepts.  Although the workshop is open for research on any aspect of concepts, there exists a set of core topics that are of special interest:

 - Representation: How can we formally describe and model concepts?
  - Learning: Where do concepts come from and how are they acquired?
 - Application: How are concepts used in cognitive tasks?

Invited Speakers: Mattis List and Marianna Bolognesi.

In more than a decade of research, it has been established that a wide variety of state-based dynamical systems, like transition systems, automata (including weighted and probabilistic variants), Markov chains, and game-based systems, can be treated uniformly as coalgebras. Coalgebra has developed into a field of its own interest presenting a deep mathematical foundation, a growing field of applications, and interactions with various other fields. Established in 1998, the aim of the CMCS workshops is to bring together researchers with a common interest in the theory of coalgebras, their logics, and their applications. As the workshop serie strives to maintain breadth in its scope, participation by researchers in neighbouring areas is strongly encouraged.

CMCS 2020 will be held virtually, as a series of approximately three hour sessions spread across five weeks.

The aim of GandALF 2020 is to bring together researchers from academia and industry which are actively working in the fields of Games, Automata, Logics, and Formal Verification. The idea is to cover an ample spectrum of themes, ranging from theory to applications, and stimulate cross-fertilisation.

This year, GANDALF will be organised together with a workshop on Stochastic Games organised by the GAMENET network which will held on September 23-24, 2020. The GAMENET meeting will focus on stochastic games with applications in computer science, economy and mathematics.

Due to COVID19 outbreak, the local organization committee and the steering committee of Gandalf have decided that the conference will be organized online this year.

Information for real life AI applications is usually pervaded by uncertainty and subject to change, and thus demands for non-classical reasoning approaches. At the same time, psychological findings indicate that human reasoning cannot be completely described by classical logical systems. Sources of explanations are incomplete knowledge, incorrect beliefs, or inconsistencies. A wide range of reasoning mechanism has to be considered, such as analogical or defeasible reasoning, possibly in combination with machine learning methods. The field of knowledge representation and reasoning offers a rich palette of methods for uncertain reasoning both to describe human reasoning and to model AI approaches.

The aim of this series of workshops is to address recent challenges and to present novel approaches to uncertain reasoning and belief change in their broad senses, and in particular provide a forum for research work linking different paradigms of reasoning. We put a special focus on papers from both fields that provide a base for connecting formal-logical models of knowledge representation and cognitive models of reasoning and learning, addressing formal as well as experimental or heuristic issues. FCR 2020 will be a workshop at the 43rd German Conference on Artificial Intelligence (KI-2020).

There are several new and rapidly evolving research areas blossoming out from the interaction of logic and relativity theory. The aim of this conference series, which take place once every 2 or 3 years, is to attract and bring together mathematicians, physicists, philosophers of science, and logicians from all over the word interested in these and related areas to exchange new ideas, problems and results.

The spirit of this conference series goes back to the Vienna Circle and Tarski's initiative Logic, Methodology and Philosophy of Science. We aim to provide a friendly atmosphere that enables fruitful interdisciplinary cooperation leading to joint research and publications.

Due to the current Covid-19 pandemic, we had to DELAY the LRB20 conference to another time which will be specified later.

The International Conferences on Conceptual Structures (ICCS) focus on the formal analysis and representation of conceptual knowledge, at the crossroads of artificial intelligence, human cognition, computational linguistics, and related areas of computer science and cognitive science. The ICCS conferences evolved from a series of seven annual workshops on conceptual graphs, starting with an informal gathering hosted by John F. Sowa in 1986. Recently, graph-based knowledge representation and reasoning (KRR) paradigms are getting more and more attention. With the rise of quasi-autonomous AI, graph-based representations provide a vehicle for making machine cognition explicit to its human users. This year ICCS 2020 is a part of 'Bolzano Summer of Knowledge' which will take place in Bolzano, Italy during the month of September, 2020.

In view of the present circumstances around the COVID-19 epidemic, the ICSS conference will happen as an online event.

Since the first conference held in Marseille in 1982, the International Conference on Logic Programming (ICLP 2020) has been the premier international event for presenting research in logic programming.

Contributions are solicited in all areas of logic programming, including but not restricted to Foundations, Declarative Programming, Related Paradigms and Synergies, Implementation and Applications. Besides the main track, ICLP 2020 will host an Applications Track, a Sister Conferences and Journal Presentation Track, a Special Session on Women in Logic Programming, and a Research Challenges in Logic Programming Track. In addition to the presentations of accepted papers, the technical program will include invited talks, advanced tutorials, the doctoral consortium, and several workshops. A school on logic programming will be held before the conference.

Several successful logic programming languages, evidenced by the availability of a multitude of solvers, industrial applications, and an active research community, have been proposed in the literature. Researchers have long recognized the need for epistemic operators in these languages. This led to a flurry of research on this topic, and renewed interest in recent years. A central question is that of the definition of a rigorous and intuitive semantics for such epistemic operators, which is still subject of ongoing research. Notions of equivalence, structural properties, and the inter-relationships between logic programming languages and established logics are all subjects being actively investigated. Another important topic is that of practical solvers to compute answers to logic programs that contain epistemic operators. Several solvers are actively developed, building on established solvers, or using rewriting-based approaches. For practical applications, additional language features are actively explored in order to be able to apply epistemic extensions of logic programming langauges to practical problems. The goal of this workshop is to facilitate discussions regarding these topics and a productive exchange of ideas.

This workshop is part of the International Conference of Logic Programming (ICLP) 2020. In keeping with the main conference, the workshop will be held as a fully virtual event this year.

Probabilistic logic programming (PLP) approaches have received much attention in this century. They address the need to reason about relational domains under uncertainty arising in a variety of application domains, such as bioinformatics, the semantic web, robotics, and many more. Developments in PLP include new languages that combine logic programming with probability theory, as well as algorithms that operate over programs in these formalisms.

PLP will be online this year and will be co-located with ICLP 2020. The workshop encompasses all aspects of combining logic, algorithms, programming and probability, and provides a forum for the exchange of ideas, presentation of results and preliminary work.

Sophisticated causal reasoning has long been prevalent in human society and continues to have an undeniable impact on the advancement of science, technology, medicine, and other significant fields. From the development of ancient tools to modern roots of causal analysis in business and industry, reasoning about causality and having the ability to explain causal mechanisms enables us to identify how an outcome of interest came to be and gives insight into how to bring about, or even prevent, similar outcomes in future scenarios.

This ICLP 2020 workshop aims to bring together researchers and practitioners of logic programming with a dedicated focus on methods and trends emerging from the study of causality and explanation. The workshop will present the latest research and application developments in these areas and provide opportunities to discuss current and future research directions and relationships to other fields (e.g. Machine Learning, Explainable AI, Diagnosis, Natural Language Processing and Understanding, Philosophy of Science). An important expected outcome of this workshop is to collect first-hand feedback from the ICLP community about the role and placement of causal reasoning and explanation in the landscape of modern computer theory as well as in the software industry.

The advent of complex information systems that rely on robust, coherent and formal representations of their subject matter, has led to the exploitation of ontological analysis and ontology-based representation. The systematic study of such analysis and representation is at the center of the modern discipline of formal ontology, which is a general theory of the types of entities and relations making up domains of interest. Researchers in many domains engage with formal ontology to provide a solid foundation for their work.

The FOIS conference is a meeting point for all researchers with an interest in formal ontology. FOIS 2020 includes a number of activities: FOIS conference (single track program), workshops (in conjunction with EKAW 2020 and ICBO 2020) ,tutorials (in conjunction with EKAW 2020 and ICBO 2020), a young researchers symposium, a demo and industry track, and an ontology show and tell. As in previous years, FOIS 2020 aims to be a nexus of interdisciplinary research and communication.

Sadly because of the COVID-19 FOIS 2020 was not able to occur as planned. While papers were reviewed and the proceedings will be published by IOS Press, the physical conference has been cancelled. In recognition of FOIS’ important social function within the applied ontology community, it was also decided to run a FOIS edition in September 2021. FOIS 2021 will happen in Bolzano, and it will include all the events originally planned for FOIS 2020 including the Early Career Symposium, the Ontology Show and Tell, as well as the Demo and Industrial Track.

The objectives of this new international workshop are:
1. to bring together practitioners and researchers from academia, industry and research institutions who are interested in the foundations and applications of cognition from the perspective of their areas of expertise and aim at a synergistic effort in integrating approaches from different areas;
2. to nurture cooperation among researchers from different areas and establish concrete collaborations;
3. to present formal methods to cognitive scientists as a general modelling and analysis approach, whose effectiveness goes well beyond its application to computer science and software engineering.

Keynote speaker: Johan van Benthem (ILLC).

Large-scale semantic processing and strong computer assistance of mathematics and science is our inevitable future. New combinations of AI and reasoning methods and tools deployed over large mathematical and scientific corpora will be instrumental to this task. The AITP conference is the forum for discussing how to get there as soon as possible, and the force driving the progress towards that.

There will be several focused sessions on AI for ATP, ITP and mathematics, Formal Abstracts, linguistic processing of mathematics/science, modern AI and big-data methods, and several sessions with contributed talks. The focused sessions will be based on invited talks and discussion oriented.

Due to the Coronavirus travel bans, the conference has been moved to September 13-18, 2020. The next evaluation will be done in mid-August. A combination of a real-world meeting with some online talks is an option.

Knowledge Representation and Reasoning (KRR) is an exciting, well-established field of research. In KRR a fundamental assumption is that an agent's knowledge is explicitly represented in a declarative form, suitable for processing by dedicated reasoning engines. This assumption, that much of what an agent deals with is knowledge-based, is common in many modern intelligent systems. In recent years KRR has contributed to new and emerging fields including the semantic web, computational biology, and the development of software agents. The biennial International Conference on the Principles of Knowledge Representation and Reasoning (KR) is a leading forum for timely, in-depth presentation of progress in the theory and principles underlying the representation and computational management of knowledge.

Due to the latest developments in Greece with the COVID19 pandemic, the hybrid format (physical and virtual participation) that was planned for KR2020 in September has been canceled. The new format, and possibly new dates, for KR2020 will be announced shortly.

NMR is the premier forum for results in the area of nonmonotonic reasoning. Its aim is to bring together active researchers in this broad field within knowledge representation and reasoning (KRR), including belief revision, uncertain reasoning, reasoning about actions, planning, logic programming, preferences, argumentation, causality, and many other related topics including systems and applications.

As in previous editions, NMR 2020 aims to foster connections between the different subareas of nonmonotonic reasoning and provide a forum for emerging topics. Workshop activities will include invited talks and presentations of technical papers. NMR 2020 is co-located with the International Conference on Principles of Knowledge Representation and Reasoning (KR 2020) and the 33rd International Workshop on Description Logics (DL 2020). In particular, NMR 2020 will share a joint session with DL 2020.

Due to the latest developments in Greece with the COVID19 pandemic, the hybrid format (physical and virtual participation) that was planned for NMR 2020 in September is likely to be canceled. The new format, and possibly new dates, for NMR2020 will be announced shortly.

The conference is concerned with the theory of computability and complexity over real-valued data.

The topics of interest include foundational work on various models and approaches for describing computability and complexity over the real numbers. They also include complexity-theoretic investigations, both foundational and with respect to concrete problems, and new implementations of exact real arithmetic, as well as further developments of already existing software packages. We hope to gain new insights into computability-theoretic aspects of various computational questions from physics and from other fields involving computations over the real numbers.

Due to the ongoing COVID-19 pandemia CCA 2020 cannot take place in Bologna, as originally intended. The entire conference will take place virtually on the Zoom online conference platform.

TSD series evolved as a prime forum for interaction between researchers in both spoken and written language processing from all over the world.  The conference program will include presentation of invited papers, oral presentations, and poster/demonstration sessions. Papers will be presented in plenary or topic oriented sessions with sufficient time for discussions of the issues raised.The TSD 2020 conference will be accompanied by one-day satellite workshops or project meetings with organizational support by the TSD organizing committee.

Even though the COVID-19 spread is kept in limits in the Czech Republic, government regulations influence travelling possibilities. As the situation in September cannot be easily predicted, the TSD 2020 PC members have decided to choose the virtual TSD 2020 conference as the only option.

This workshop focuses on the issues of information spread in a social network of natural and artificial agents as studied by the emerging interdisciplinary field of multi-agent systems, reasoning and social network analysis.

COVID-19 note: the workshop will follow ECAI. If they go virtual, we go virtual (editor's note: they do).

Computational Creativity (or CC) is a discipline with its roots in Artificial Intelligence, Cognitive Science, Engineering, Design, Psychology and Philosophy that explores the potential for computers to be autonomous creators in their own right. ICCC is an annual conference that welcomes papers on different aspects of CC, on systems that exhibit varying degrees of creative autonomy, on frameworks that offer greater clarity or computational felicity for thinking about machine (and human) creativity, on methodologies for building or evaluating CC systems, on approaches to teaching CC in schools and universities or to promoting societal uptake of CC as a field and as a technology, and so on.

The evolution of the COVID-19 crisis, the concerns about safety and well-being of the participants and the current travel constraints have taken the organisation of turning ICCC’20 100% digital.

Mereology is a very plural subject in which individual researchers may work in multiple potentially incompatible perspectives. It is well-known that mereological methods are important in AI and formalizing human reasoning. In particular, these are relevant in formal approaches to vagueness and point-free reasoning. The main aim of the symposium session is to connect researchers in formal approaches to vagueness and ontology from applied mereological perspectives. All submissions are expected to have a strong focus on applications or potential applications.

Update: Because of the ongoing pandemic, FVRM'20 has been merged with AAIA 2020 (15th International Symposium on Advanced Artificial Intelligence in Applications), which as part of FedCSIS 2020 will be organized as a tele/video-based conference.

The Joint Ontology WOrkshops (JOWO) is a venue of workshops that, together, address a wide spectrum of topics related to ontology research, ranging from Cognitive Science to Knowledge Representation, Natural Language Processing, Artificial Intelligence, Logic, Philosophy, and Linguistics.

Workshops and tutorials at JOWO 2020 are events whose scientific program is independently established by the workshop organizers.  Workshops can be events that provide a forum for the discussion of topics broadly related to ontologies, formal ontology, and knowledge management and their application in information science or other areas. JOWO is especially suitable for interdisciplinary and innovative formats.

At the JOWO 2020 "The Bolzano Summer of Knowledge" Edition, workshops and tutorials will be taking place virtually between August 31st and October 7th 2020, and will be affiliated with the conferences EKAW, FOIS, and ICBO.

CCC is a workshop series that brings together researchers applying logical methods to the development of algorithms, with a particular focus on computation with infinite data, where issues of continuity, computability and constructivity play major roles. Specific topics include exact real number computation, computable analysis, effective descriptive set theory, constructive analysis, and related areas. The overall aim is to apply logical methods in these disciplines to provide a sound foundation for obtaining exact and provably correct algorithms for computations with real numbers and other continuous data, which are of increasing importance in safety critical applications and scientific computation.

The workshop was planned to take place in Faro, Portugal. However, due to the COVID-19 pandemic, the workshop will now be online.

This workshop will aim to bring together researchers whose interests bridge between AI and other disciplines such as Cognitive Science, Language and Philosophy, to study how computational argumentation can form an underlying theoretical and practical basis for modeling cognition and building human-centric AI systems.
The main general questions that will concern the workshop are:
- Can argumentation provide the basis for computational models of human reasoning that are cognitively adequate?
- How can we form a synthesis between computational argumentation and theories of cognition that will give us models of computational cognition for the development of AI systems?

Due to the COVID-19 pandemic, ECAI-2020 will be held as a virtual conference, and so will the COGNITAR-2020 workshop.

The 3rd International Workshop of User-Oriented Logic Paradigms (IULP) focuses on discussing different aspects involved in making logic paradigms more user-friendly/oriented, where the "user" could be either an expert of the paradigm, or a non-expert who simply uses tools developed for the paradigm in some application. IULP aims to bring together researchers working on different logic paradigms, such as answer set programming, constraint logic programming, probabilistic logic programming, abductive logic programming, inductive logic programming, argumentation, principles of teaching etc., as user- friendliness is an important topic in all of these areas.

IULP, collocated with the 24th European Conference on Artificial Intelligence (ECAI2020), aims to provide an international forum for researchers in the AI, KR, and applied sciences community to discuss and present advances in theories, formalisms, and applications to deliver the mature and well-defined methods of logic paradigms to a wider audience.

The biennial European Conference on Artificial Intelligence (ECAI) is Europe's premier venue for presenting scientific results in AI. Under the general theme 'Paving the way towards Human-Centric AI', the 24th edition of ECAI was to be held in Santiago de Compostela, a UNESCO's World Heritage City which is the destination of unique Routes that cross all Europe since the Middle Ages.

Since the evolution of the COVID-19 pandemic and the mobility constraints still in place make it difficult planning, the organizers believe that the most reasonable decision is to hold ECAI 2020 fully online, and have announced the new Digital ECAI2020.

Strategic reasoning is a key topic in multi-agent systems research. The extensive literature in the field includes a variety of logics used for modeling strategic ability. Results from the field are now being used in many exciting domains such as information system security, adaptive strategies for robot teams, and automatic players capable to outperform human experts. A common feature in all these application domains is the requirement for sound theoretical foundations and tools accounting for the strategies that artificial agents may adopt in the situation of conflict and cooperation.

The SR international workshop series aims at bringing together researchers working on different aspects of strategic reasoning in computer science, both from a theoretical and a practical point of view. SR 2020 will be held with ECAI 2020 in Santiago de Compostela, Spain.

Formal Concept Analysis (FCA) is a mathematically well-founded theory aimed at data analysis and classification. FCA allows one to build a concept lattice and a system of dependencies (implications and association rules) which can be used for many AI needs, e.g. knowledge processing, knowledge discovery, knowledge representation and reasoning, ontology engineering as well as information retrieval, recommendation, social network analysis and text processing. Recent years have been witnessing increased scientific activity around FCA, in particular a strand of work emerged that is aimed at extending the possibilities of plain FCA w.r.t. knowledge processing. While the capabilities of FCA are extended, new possibilities are arising in the framework of FCA.

The 8th FCA4AI workshop, co-located with ECAI 2020, is (as usual) dedicated to discuss such issues, and in particular:
- How can FCA support AI activities in knowledge discovery, knowledge representation and reasoning, machine learning, natural language processing...
- By contrast, how the current developments in AI can be integrated within FCA to help AI researchers to solve complex problems in their domain.

Logical and semantic frameworks are formal languages used to represent logics, languages and systems. These frameworks provide foundations for the formal specification of systems and programming languages, supporting tool development and reasoning.

In response to COVID-19, the program committee and local organization decided to move LSFA 2020 to a full online conference.

Diagrams 2020 is the eleventh conference in the biennial series that started in 2000. The multidisciplinary nature of Diagrams means it encompasses: architecture, art, artificial intelligence, biology, cartography, cognitive science, computer science, education, graphic design, history of science, human-computer interaction, linguistics, logic, mathematics, philosophy, psychology, and software modelling. The conference attracts a large number of researchers from these interrelated fields, positioning Diagrams as the major international event in the area.

Unfortunately, due to the ongoing Covid-19 pandemic, the physical conference in Estonia will not take place. Instead of a physical meeting, the Steering Committee have agreed that Diagrams 2020 will be held virtually through online talks.

Advances in Modal Logic is an initiative aimed at presenting the state of the art in modal logic and its various applications. The initiative consists of a conference series together with volumes based on the conferences. AiML 2020 is the 13th conference in the series.

Invited Speakers:
Bahareh Afshari (University of Amsterdam and Gothenburg University)
Nick Behanishvilii (University of Amsterdam)
Melvin Fitting (City University of New York)
Nina Gierasimczuk (Danish Techical University, Copenhagen)

SetVR 2020 will be the 7th meeting, with the first one held in 2004, previously called the Euler Diagrams Workshop. It aims to promote theoretical, empirical, applied research on visualization and diagrammatic reasoning, especially, about sets (set-theoretical and grouped data). SetVR 2020 will run as part of Diagrams 2020 conference, which will be held from August 24th to 28th in 2020, and is expected to occupy one day during this period.

Machine learning does not only transform businesses and the social sphere, it also fundamentally transforms science and scientific practice. The workshop focuses on that latter issue. It aims to discuss whether and how exactly recent developments in the field of machine learning potentially transform the process of scientific inquiry. For this, it sets out to analyse the field of machine learning through the lenses of philosophy of science, epistemology, research ethics and cognate fields such as sociology of science. The workshop will bring together philosophers from different backgrounds (from formal epistemology to the study of the social dimensions of science) and machine learning researchers.

The workshop is organised by the 'Ethics and Philosophy Lab' of the Cluster of Excellence 'Machine Learning: New Perspectives for Science' at the University of Tübingen.

The workshop planned for June 2020 is postponed - new date will be announced as soon as possible.

As it is its tradition, *AUTOMATA 2020* will focus on the theory and application of cellular automata and discrete dynamical systems in connection to complexity theory and algorithmic information. There will be special sessions on *Automata in Deep Learning* and *Algorithmic Information Dynamics* with a particular interest in aspects of computability in causation and reprogrammability.

AUTOMATA 2020 is innovating on various fronts given the challenge of climate change we want to reduce the conference Carbon footprint through a virtual attendance option, and also by addressing the underrepresentation of young and minority groups in the field.

Logics of dependence and independence are novel non-classical logics aiming at characterizing dependence and independence notions in sciences. This field of research has grown rapidly in recent years. The framework of the logics has found applications also in fields like database theory, linguistics, social choice, quantum physics and so on. This workshop will bring together researchers from all these relevant areas and provide a snapshot of the state of the art of logics of dependence and independence.

Semantic Spaces at the Intersection of NLP, Physics, and Cognitive Science (SemSpace2020) is the latest edition of a series of workshops that brings together research at the intersection of NLP, Physics, and Cognitive Science. Using the common ground of vector spaces, the workshop offers researchers in these areas an appropriate forum for presenting their uniquely motivated work and ideas. The interplay between the three disciplines will foster theoretically motivated approaches to understanding how meanings of words interact with each other in sentences and discourse via grammatical types, how they are determined by input from the world, and how word and sentence meanings interact logically.

COVID-19 note: the workshop will take place, either in an online format or in person if the situation allows. Since ESSLLI 2020 (with which the workshop was originally to be co-located) has been cancelled, the dates and location may be subject to slight change.

WoLLIC is an annual international forum on inter-disciplinary research involving formal logic, computing and programming theory, and natural language and reasoning. Each meeting includes invited talks and tutorials as well as contributed papers. WoLLIC 2020 is planned to also have a special session with the exhibition of a one-hour documentary film about Maryam Mirzakhani, a remarkable mathematician whose contributions were recognized with a Fields Medal just a few years before her untimely death.

Due to the Covid-19 crisis this conference has been postponed to 2021.

The biennial DEON conferences are designed to promote interdisciplinary cooperation amongst scholars interested in linking the formal-logical study of normative concepts, normative language and normative systems with computer science, artificial intelligence, linguistics, philosophy, organization theory and law. In addition to these general themes, DEON 2020 will encourage a special focus on the topic "Norms in Social Perspective". We are happy to announce that the keynote speakers for DEON 2020 will be: Marcia Baron (Indiana University, Bloomington), Emiliano Lorini (IRIT-CNRS, Toulouse University, France), Shyam Nair (Arizona State University, Tempe), and Sonja Smets (ILLC, University of Amsterdam).

DEON 2020 will be co-located with the Summer School on Mathematical Philosophy for Female Students, to be held in Munich from 26th until 31st July 2020.

Due to the Covid-19 crisis the DEON 2020 has to be postponed to 2021.

In (pure) mathematics there has always existed a strong informal sense of "naturality". "Natural" theories, notions, properties, or proofs are prefered over technical, convoluted, or counterintuitive approaches. If formal mathematics is to become part of mainstream mathematics, its formalizations and user experience have to become more "natural". This workshop broadly addresses the issue of naturality in formal mathematics.

This workshop is part of the 13th Conference on Intelligent Computer Mathematics (CICM 2020).

Digital and computational solutions are becoming the prevalent means for the generation, communication, processing, storage and curation of mathematical information. CICM brings together the many separate communities that have developed theoretical and practical solutions for mathematical applications such as computation, deduction, knowledge management, and user interfaces. It offers a venue for discussing problems and solutions in each of these areas and their integration.

CICM 2020 Invited Speakers: Kevin Buzzard (Imperial College, London, UK), Catherine Dubois (ENSIIE, CNRS, Evry, France) and Christian Szegedy (Google Research, Mountain View, CA, USA).

The IEEE World Congress on Computational Intelligence (IEEE WCCI) is the world’s largest technical event in the field of computational intelligence. WCCI 2020 features the flagship conference of the Computational Intelligence Society: The 2020 International Joint Conference on Neural Networks (IJCNN 2020), the 2020 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2020), and the 2020 IEEE Congress on Evolutionary Computation (IEEE CEC 2020) under one roof. It encourages cross-fertilisation of ideas among the three big areas and provides a forum for intellectuals from all over the world to discuss and present their research findings on computational intelligence.

WatchDial will be the 24th edition of the SemDial workshop series, which aims to bring together researchers working on the semantics and pragmatics of dialogue in fields such as formal semantics and pragmatics, computational linguistics, artificial intelligence, philosophy, psychology, and neuroscience. In 2020 the workshop will be hosted by the programs in Linguistics and in Computational Linguistics, in collaboration with the departments of Computer Science and Philosophy at Brandeis University, and will be collocated with the North American Summer School in Logic, Language, and Information.

NASSLLI 2020 will consist of a series of courses and workshops, most running daily from Monday July 13 - Friday July 17. In addition, there will be intensive mini-courses the day prior to the start of courses (Sunday July 12). The summer school is aimed at graduate students and advanced undergraduates in the fields of Linguistics, Computer Science, Cognitive Science, Logic, Philosophy, AI, and other related areas. NASSLLI brings these disciplines together with the goal of producing excellence in the study of how minds and machines represent, communicate, manipulate and reason with information. The 2020 NASSLLI will also have a theme - Formal and Computational Pragmatics and Models of Dialogue.

NAtural LOgic Meets MAchine Learning (NALOMA) is the first workshop of its kind, aiming to bridge the gap between Machine Learning and Natural Logic. It will take place from July 11-July 17, 2020, during the 9th North American Summer School for Logic, Language, and Information (NASSLLI) at Brandeis University in Waltham, Massachusetts. The aim of this workshop is to bring together researchers working in both Natural Logic and Machine Learning approaches to NLI, initiating a discussion with the two sets of researchers that have been largely unconnected up to now.

The LICS Symposium is an annual international forum on theoretical and practical topics in computer science that relate to logic, broadly construed.

The 35th Annual ACM/IEEE Symposium on Logic in Computer Science (LICS 2020) has originally been planned to be held in Beijing (China), and then moved to Saarland Informatics Campus in Saarbrücken (Germany). Due to the pandemic, the symposium is now held online in the period July 8-11, with satellite workshops on July 6-7, and in virtual co-location with ICALP 2020.

The 47th International Colloquium on Automata, Languages and Programming (ICALP 2020), the main European conference in Theoretical Computer Science and annual meeting of the European Association for Theoretical Computer Science (EATCS), will take place in Beijing (China) on 8 - 12 July 2020. ICALP 2020 will have the two traditional tracks A (Algorithms, Complexity and Games) and B (Automata, Logic, Semantics and Theory of Programming). The conference will be preceded by a series of workshops, which will take place on 6-7 July 2020.

ICALP 2020 was to be hosted at Peking University, in co-location with LICS 2020. Due to the pandemic, the symposium is now held online.

This is the 14th in a series of bi-annual conferences on the applications of logical methods to foundational issues in the theory of individual and interactive decision-making.

Among the topics of particular relevance are:
 - Modal logics for games and protocols
 - Foundations of game and decision theory
 - Learning and information-processing models
 - Bounded rationality approaches to game and decision theory.

The Society for Philosophy of Science in Practice (SPSP) is an interdisciplinary community of scholars who approach the philosophy of science with a focus on scientific practice and the practical uses of scientific knowledge. The SPSP conferences provide a broad forum for scholars committed to making detailed and systematic studies of scientific practices - neither dismissing concerns about truth and rationality, nor ignoring contextual and pragmatic factors. The conferences aim at cutting through traditional disciplinary barriers and developing novel approaches.

Keynote speakers: Karen Barad, University of California at Santa Cruz; Till Grüne-Yanoff, Royal Institute of Technology (KTH) Stockholm.

Rewriting is a powerful model of computation that underlies much of declarative programming and is ubiquitous in mathematics, logic, theorem proving, verification, model-checking, compilation, biology, chemistry, physics, etc. The school is aimed at Master and PhD students, researchers and practitioners interested in the use or the study of rewriting and its applications.

We intend to offer on the one hand a basic track on rewriting and on lambda calculus, and on the other hand an advanced track on more specialized topics, related to state-of-the-art research and novel applications. The typical day will contain 4 slots of 90 minutes.

First-order modal logic is a natural specification language for describing properties of many infinite-state systems, but it is notoriously undecidable, in the sense that even simple fragments (like the two-variable fragment) are undecidable. Despite this, in the recent few years, researchers have managed to find some useful syntactic restrictions that yield decidability. The workshop is intended as a review of this rapidly evolving direction of research. We seek to identify new potential techniques for constructing decision procedures.

We are happy to announce the upcoming "Udine Workshop on Singular Cardinals", that will be held in Udine (Italy) on 6-7 July 2020. It will be held at Palazzo di Toppo Wassermann, a prestigious 18th-century palace. Singular cardinals are transversal to set theory and beyond, and this will be an occasion to bring together researchers working on singular cardinals and share the latest developments on this topic.

Talks: James Cummings (Carnegie Mellon University) Péter Komjáth (Eötvös Loránd University) Menachem Magidor (The Hebrew University of Jerusalem) * Itay Neeman (UCLA) * Assaf Rinot (Bar-Ilan University) Jouko Väänänen (University of Helsinki) * To confirm

QBFEVAL'20 is the 2020 competitive evaluation of QBF solvers, and the fifteenth event aimed to assess the performance of QBF solvers. QBFEVAL'20 awards solvers that stand out as being particularly effective on specific categories of QBF instances. QBEVAL'20 is a joint event with the 23rd Int. Conference on Theory and Applications of Satisfiability Testing (SAT).

The International Conference on Theory and Applications of Satisfiability Testing (SAT) is the premier annual meeting for researchers focusing on the theory and applications of the propositional satisfiability problem, broadly construed. In addition to plain propositional satisfiability, it also includes Boolean optimization (such as MaxSAT and Pseudo-Boolean (PB) constraints), Quantified Boolean Formulas (QBF), Satisfiability Modulo Theories (SMT), and Constraint Programming (CP) for problems with clear connections to Boolean-level reasoning.

Due to the current circumstances regarding the COVID-19 pandemic outbreak, the conference program chairs have decided to hold SAT 2020 as a fully virtual conference which will be held from 3 to 10 July 2020.

UNILOG LOGIC PRIZE is an international initiative to award one prize per country to an original manuscript on logic. The spanish incarnation is open to all researchers who are (or have been in the last 10 years) affiliated with any university or research institution based in Spain, regardless of their position, nationality, gender or age. This includes not only professors and researchers from these institutions, but also current postgraduate students and doctors who presented their Ph. Dissertations less than 10 years ago.

Participants are asked to submit an original manuscript written in English, between 15 and 30 pages, on any topic that can be considered to be related to logic (according to the standards of the international logic community).

The 2020 annual conference of the Australasian Association for Logic (AAL) was to be held in Sydney, Australia, on Thursday 2nd July and Friday 3rd July 2020. The conference is sponsored by the Association for Symbolic Logic (ASL). Student ASL members may apply for modest student travel awards to attend the conference.

Just after AAL 2020, the University of Sydney was to be hosting the 2020 annual conference of the Australasian Association of Philosophy, from July 5th until July 9th: see the conference webpage for further details.

AAL 2020 and AAP 2020 have had to be cancelled due to COVID-19. The organizers have stated that they may be able to organise a one-day virtual meeting if there is sufficient interest.

The Women in Logic workshop (WiL) provides an opportunity to increase awareness of the valuable contributions made by women in the area of logic in computer science. Its main purpose is to promote the excellent research done by women, with the ultimate goal of increasing their visibility and representation in the community. Women in Logic 2020 is part of "Paris Nord Summer of LoVe 2020", a joint event on LOgic and VErification at Universit́e Paris 13, made of Petri Nets 2020, IJCAR 2020, FSCD 2020, and over 20 satellite events.

Our aim is to:
- provide a platform for female researchers to share their work and achievements;
- increase the feelings of community and belonging, especially among junior faculty, post-docs and students through positive interactions with peers and more established faculty;
- establish new connections and collaborations;
- foster a welcoming culture of mutual support and growth within the logic research community.
We believe these aspects will benefit women working in logic and computer science, particularly early-career researchers.

Thanks to the generous support of SIGLOG, the Vienna Center for Logic and Algorithms (VCLA) and the Institute of Logic, Language and Computation of the University of Amsterdam (ILLC), applications for awards are invited to facilitate students and postdocs, who are authors of accepted papers to register and travel to the WiL 2020. Deadline: May 15, 2020. The awardees of the SIGLOG/VCLA/ILLC Travel Award will be reimbursed for a portion of their travel expenses, and registration costs. There will be at most one award per paper.

Logical frameworks and meta-languages form a common substrate for representing, implementing and reasoning about a wide variety of deductive systems of interest in logic and computer science. Their design, implementation and their use in reasoning tasks, ranging from the correctness of software to the properties of formal systems, have been the focus of considerable research over the last two decades. This workshop will bring together designers, implementors and practitioners to discuss various aspects impinging on the structure and utility of logical frameworks, including the treatment of variable binding, inductive and co-inductive reasoning techniques and the expressiveness and lucidity of the reasoning process.

LFMTP 2020 is affiliated with FSCD 2020 and IJCAR 2020. To celebrate the 60th birthday of Frank Pfenning and his great many contributions to the topics of LFMTP, one session will be devoted to talks by collaborators and friends of Frank.

IJCAR is the premier international joint conference on all topics in automated reasoning. It is the merger of leading events in automated reasoning: CADE (Conference on Automated Deduction), FroCoS (Symposium on Frontiers of Combining Systems), ITP (International Conference on Interactive Theorem Proving) and TABLEAUX (Conference on Analytic Tableaux and Related Methods). JCAR 2020 will be co-located with the conference FSCDThe IJCAR 2020 technical program will consist of presentations of high-quality original research papers, short papers describing interesting work in progress, system descriptions, and invited talks.

Woody Bledsoe Travel Awards will be available to support selected students attending the conference.

CiE 2020 is the 16th conference organized by CiE (Computability in Europe), a European association of mathematicians, logicians, computer scientists, philosophers, physicists and others interested in new developments in computability and their underlying significance for the real world.

The CiE conferences serve as an interdisciplinary forum for research in all aspects of computability, foundations of computer science, logic, and theoretical computer science, as well as the interplay of these areas with practical issues in computer science and with other disciplines such as biology, mathematics, philosophy, or physics.

Due to the current medical situation related to the coronavirus COVID-19 outbreak, the Organizing Committee of CiE2020, in agreement with the CiE Steering Committee, has decided to hold the conference virtually, without a physical gathering. The organizers are committed to recreate the usual CiE climate under the new conditions.

FSCD covers all aspects of formal structures for computation and deduction from theoretical foundations to applications. Building on two communities, RTA (Rewriting Techniques and Applications) and TLCA (Typed Lambda Calculi and Applications), FSCD embraces their core topics and broadens their scope to closely related areas in logics, models of computation, semantics and verification in new challenging areas.

Computer Theorem Proving is becoming a paradigm as well as a technological base for a new generation of educational software in science, technology, engineering and mathematics. The workshop was to bring together experts in automated deduction with experts in education in order to further clarify the shape of the new software generation and to discuss existing systems.

The ThEdu'20 workshop was associated to IJCAR, which due to the COVID-19 crisis is now held as a Virtual Conference. It is our feeling that a virtual meeting might not allow us to fully reproduce the usual face-to-face networking opportunities of our event. So, unfortunately, the ThEdu'20 had better be cancelled.

The interest expressed for the workshop was such, that the PC decided to publish proceedings, in spite of cancellation after IJCAR become virtual. Thanks to a decision of the EPTCS editorial board adapting to the specific situation, the proceedings already received the approval to be published by EPTCS.

Unification is concerned with the problem of making two terms equal, finding solutions for equations or making formulas equivalent. It is a fundamental process used in a number of fields of computer science, including automated reasoning, term rewriting, logic programming, natural language processing, program analysis, types, etc.  The International Workshop on Unification (UNIF) is a yearly forum for researchers in unification theory and related fields to meet old and new colleagues, to present recent (even unfinished) work, and to discuss new ideas and trends. It is also a good opportunity for young researchers and scientists working in related areas to get an overview of the state of the art in unification theory.

The 34th International Workshop on Unification is part of "Paris Nord Summer of LoVe 2020", a joint event on LOgic and VErification at Universit́e Paris 13. UNIF 2020 will be a satellite workshop of The International Joint Conference on Automated Reasoning (IJCAR 2020).

The aim of this Joint Linearity and TLLA workshop is to bring together researchers who are currently working on linear logic and related fields, to foster their interaction and provide a forum for presenting new ideas and work in progress. We also hope to enable newcomers to learn about current activities in this area. New results that make central use of linearity, ranging from foundational work to applications in any field, are welcome. Also welcome are more exploratory presentations, which may examine open questions and raise fundamental concerns about existing theories and practices.

The International Joint Conference on Rules and Reasoning (RuleML+RR) is the leading international joint conference in the field of rule-based reasoning. Stemming from the synergy between the well-known RuleML and RR events, one of the main goals of this conference is to build bridges between academia and industry.

RuleML+RR 2020 aims to bring together rigorous researchers and inventive practitioners, interested in the foundations and applications of rules and reasoning in academia, industry, engineering, business, finance, healthcare and other application areas. It provides a forum for stimulating cooperation and cross-fertilization between the many different communities focused on the research, development and applications of rule-based systems.

RuleML+RR 2020 is co-located with DecisionCAMP 2020 and the 16th Reasoning Web Summer School (RW 2020), as part of the Declarative AI 2020 event. The theme of the 2020 edition is: Explainable algorithmic decision-making

CLIB covers a broad spectrum of areas related to natural language processing and computational linguistics focused on but not limited to Bulgarian.

CLIB 2020's invited speakers will be: Prof. Galya Angelova (Institute of Information and Communication Technologies, Bulgarian Academy of Sciences Assoc), Prof. Svetla Boytcheva (Institute of Information and Communication Technologies, Bulgarian Academy of Sciences) and Dr. Preslav Nakov (Qatar Computing Research Institut). A special session on wordnets and ontologies is also envisaged.

The CLIB 2020 Organising Committee is glad to announce that the 4th International Conference on Computational Linguistics in Bulgaria will take place on 25 and 26 June 2020. There will be two modes of attendance: in person or online. The dates were selected in accordance with the latest regulations issued by the Minister of Health of the Republic of Bulgaria, allowing conferences to be held in compliance with the imposed anti-epidemic measures.

The Philosophy of Mathematics Association is an affiliated group of the American Philosophical Association and as such is invited to organize sessions in the group program at APA divisional meetings. The PMA has held such a group session at the 2020 Eastern meeting, and is hoping to make philosophy of mathematics symposia a regular component of APA divisional meetings. Please submit your proposal for a 2- or 3-hour symposium on a topic in the philosophy of mathematics by July 30, 2020.

Proposals will be vetted by a joint committee of the PMA and the Association for the Philosophy of Mathematical Practice (APMP), and successful proposals will be scheduled for inclusion at a 2021 APA divisional meeting.

The Institute of Philosophy of the The Czech Academy of Sciences announces 'LOGICA 2020', the 33nd in the series of annual international symposia devoted to logic. Rhe first session begins on the morning of Tuesday, 16 June. The symposium closes at noon on Friday, 19 June.

Invited speakers: Katalin Bimbo, Rosalie Iemhoff, Alena Vencovska and Diderik Batens.

We announce, with a considerable amount of regret, that Logica 2020 is cancelled due to the global COVID-19 pandemic.

We invite participation in the XXIII International Summer School in Philosophy of Physics to be held in Urbino 15th-18th June 2020. The topic of the school is 'Philosophy of Quantum Computation' and it will feature lectures given by Michael Cuffaro (Munich Center for Mathematical Philosophy) and Roberto Giuntini (University of Cagliari), with afternoon seminars given by David Vitali (University of Macerata), Gustavo Martin Bosyk (University of Cagliari), and Rossella Lupacchini (University of Bologna). The School will host a limited number of students, graduate students and early researchers depending on a successful application.

Due to the current COVID-19 pandemic, it will be impossible to host the XXIII International Summer School in Philosophy of Physics in Urbino. For this reason, we have decided to move the school online and make it free of charge.

Automated planning is of central concern in high-level symbolic AI research, with applications in logistics, robotics and service composition. In the simple case of an agent operating in a known world, the output of a planner is just a sequence of actions to be performed to the effect that it achieves a desired goal state. Epistemic planning is the enrichment of automated planning with epistemic notions, including knowledge and beliefs, which not only refer to incomplete knowledge, but also beliefs about this knowledge.

Epistemic planning has promising application potentials in all types of domains requiring artificial agents that have skills both in planning and in reasoning about knowledge and beliefs (of themselves and others). Such applications include domestic robots interacting with humans, non-player characters in video games, and autonomous robots interacting in a factory setting. It is a relatively recent area of research, and is inherently multi-disciplinary involving research from automated planning, epistemic logic, and knowledge representation & reasoning. In order to achieve formalisms and systems for epistemic planning that are both expressive and practically efficient, it is necessary to combine the state of the art from all three areas.

Due to the Corona crisis this conference has been rescheduled for fall 2020.

The conference brings together researchers working on the mathematical foundations of quantum physics, quantum computing, and related areas, with a focus on structural perspectives and the use of logical tools, category-theoretic structures, formal languages, semantic methods, and other computer science techniques applied to the study of physical behaviour in general. Work that applies structures and methods inspired by quantum theory to other fields (including computer science) is also welcome.

QPL 2020 will be co-located with the 36th Conference on the Mathematical Foundations of Programming Semantics (MFPS 2020).

The international Conference "ULTRAMATH 2020" aims to present recent results in the whole spectrum of mathematics which are grounded on the use of ultrafilters and ultraproducts. Its main goals:
- Disseminate information about the various techniques related to the use of ultrafilters and ultraproducts, and their potential to attack open problems.
 - Bring together researchers with different backgrounds, and encourage their collaborations and interactions, especially on topics connecting different areas of mathematics.

Given the current situation and prospects regarding the COVID-19 pandemic disease, the organizers regret to inform that we decided to postpone the UltraMath 2020 Conference to next year.

The ACL2 Workshop series is the major technical forum for users of the ACL2 theorem proving system to present research related to the ACL2 theorem prover and its applications. ACL2 is an industrial-strength automated reasoning system, the latest in the Boyer-Moore family of theorem provers. ACL2-2020 is a two-day workshop to be held in Austin, Texas, USA, on May 28-29, 2020. It is the 16th in the series of ACL2 workshops, which occur approximately every 18 months. The workshop will feature invited keynotes, technical papers, and rump sessions that discuss ongoing research.

Due to the COVID-19 pandemic, the ACL2 Workshop 2020 will take place online.

The philosophy department at the University of Bergen is pleased to invite applications for participation in an early-career masterclass on logical epistemology, with tutorials from both Gila Sher and Michael Devitt. Participants will also have the opportunity to present their own work in the philosophy of logic with a 30-minute presentation, and receive feedback from experts in the field.

The masterclass immediately follows the Bergen Workshop on Logical Evidence, from the 26th-27th May. Participants of the masterclass are welcome to attend the workshop for no fee.

Due to the covid-19 pandemic, both the workshop and the masterclass are postponed.

The series of International Conferences on Logic for Programming, Artificial Intelligence and Reasoning (LPAR) is a forum where, year after year, some of the most renowned researchers in the areas of logic, automated reasoning, computational logic, programming languages and their applications come to present cutting-edge results, to discuss advances in these fields, and to exchange ideas in a scientifically emerging part of the world.

The organizers, together with the LPAR steering committee, have decided to cancel LPAR-23 in Alicante, in May 2020. We will not organize LPAR-23 in May 2020 as an online conference either. Rather, we will "merge" LPAR-23 with LPAR-24, offering the authors of accepted LPAR-23 papers the possibility, if they wish, to present their work at LPAR-24 in Tobago, January 2021. Details on LPAR-24 will be announced in summer/fall 2020.

Integrating generic and contextual knowledge remains a challenging task in Computational Linguistics and interfacing fields. While current data-driven models excel in capturing broad regularities, they can fail to apply this information to specific situations. The GeCKo symposium seeks to 1) understand the issues involved in the integration of generic and situation-specific information in Computational Linguistics, across applications and research areas; 2) identify ways forward; and 3) cross-fertilize Computational Linguistics with Machine Learning, Linguistics, and Cognitive Science researchers working at this junction.

The GeCKo symposium will feature talks by invited speakers, contributed talks, as well as a poster session preceded by lightning talks.

The aim of JELIA 2021 is to bring together active researchers interested in all aspects concerning the use of logics in Artificial Intelligence to discuss current research, results, problems, and applications of both theoretical and practical nature. JELIA strives to foster links and facilitate cross-fertilisation of ideas among researchers from various disciplines, among researchers from academia and industry, and between theoreticians and practitioners.

JELIA 2021 will be held in Klagenfurt, Austria, from May 17th to May 20th, 2021, circumstances permitting. The conference could also be held in a hybrid (physical presence and online) or online-only mode, depending on the development of the Covid-19 pandemic.

Social Choice and Welfare (SCW) mainly publishes high-quality papers studying models of welfare economics and collective choice. Conceptual or philosophical papers that are of exceptional quality and close to the core topics of the journal will also be considered for this special issue.

The goal of this special issue is to put together a number of original articles that further our understanding of how, and when, deliberation and aggregation can be conjoined in order to arrive at better processes of collective attitude formation. The overarching question is how deliberation can be better geared towards aggregation, and how to enrich current models of belief and preference aggregation to make them more amenable to the results of deliberation.

ISA-16 is the sixteenth edition of a series of joint workshops of the ACL Special Interest Group in Semantics (SIGSEM) and the International Organisation for Standardisation ISO. ISA-workshops bring together experts in the annotation of semantic information as expressed in text, speech, gestures, graphics, video, images, and in communicative behaviour where multiple modalities are combined. Examples of semantic annotation include the markup of events, time, space, dialogue acts, discourse relations, semantic roles, coreference, quantification phenomena, and other aspects of meaning for which the ISO organisation pursues the establishment and application of standardised annotation methods and representation schemes, in order to support the creation of interoperable semantic and pragmatic resources.

Besides a main track, ISA-16 will feature two specialised tracks, focused on (a) the annotation of quantification (and quantified modification) in natural language and (b) the design and representation of data structures for generating visualisations of linguistically represented objects, properties, and events. Both specialised tracks will consist of a pre-conference on-line portion and an on-site portion during the ISA-16 workshop.

As the LREC 2020 conference has been cancelled, due to the Covid-19 outbreak, so has the ISA-16 workshop. The workshop proceedings are however published according to the original schedule.

The widespread use and increasing complexity of mission-critical and safety-critical systems at NASA and the aerospace industry requires advanced techniques that address their specification, design, verification, validation, and certification requirements. The NASA Formal Methods Symposium is a forum to foster collaboration between theoreticians and practitioners from NASA, academia, and industry, with the goal of identifying challenges and providing solutions towards achieving assurance for such critical systems.

New developments and emerging applications like autonomous on-board Software for Unmanned Aerial Systems (UAS), UAS Traffic Management (UTM), advanced separation assurance algorithms for aircraft, and the need for system-wide fault detection, diagnosis, and prognostics provide new challenges for system specification, development, and verification approaches. The focus of these symposiums are on formal techniques and other approaches for software assurance, including their theory, current capabilities and limitations, as well as their potential application to aerospace, robotics, and other NASA-relevant safety-critical systems during all stages of the software life-cycle.

Due to concerns about COVID-19, NFM2020 will shift to a virtual symposium.

LAMAS is a scientific network spanning an interdisciplinary community of researchers working on logical aspects of multi-agent systems (MAS) from the perspectives of artificial intelligence, computer science, game theory, and more.

LAMAS2020 will be the next annual event of the LAMAS research network and will continue the series of LAMAS workshops. The LAMAS workshop is the pivotal event of the network and it provides a platform for presentation, exchange, and publication of ideas in all these areas, including:
 - Logical systems for modeling, specification, analysis and synthesis of MAS
 - Deductive systems and decision procedures for logics for MAS
 - Algorithmic methods for formal verification of MAS
 - Logic-based tools for MAS
 - Applications of logics in MAS

Because of the covid-19 LAMAS2020 will be entirely virtual.

“PhDs in Logic” is an annual graduate conference organized by graduate students. This interdisciplinary conference welcomes contributions to various topics in mathematical logic, philosophical logic, and logic in computer science. It involves tutorials by established researchers as well as short (20-25 minutes) presentations by PhD students, master students and first-year postdocs on their research.
The 12th edition of “PhDs in Logic” will take place at the Freie Universität Berlin, Germany, from April 27 to 29, 2020.

We welcome students to participate in PhDs in Logic XII regardless of whether they want to submit a contribution. Students interested in participating, even without giving a talk, are kindly asked to register.

Due to efforts to restrain the spreading of the Corona Virus, all public events at all Berlin Universities have been cancelled until the 20th of July 2020. When the situation has sufficiently cleared an alternative date will be selected.

This workshop aims to bring together researchers working in the communities of Constraint/Logic Programming (e.g., ICLP and CP), Program Verification (e.g., CAV, TACAS, and VMCAI), and Automated Deduction (e.g., CADE), on the topic of Horn clause based analysis, verification and synthesis. Horn clauses have been advocated by these communities at different times and from different perspectives, and this workshop is organized to stimulate interaction and a fruitful exchange and integration of experiences.

Today's IT systems, and the interactions between them, become increasingly complex. Power grid blackouts, airplane crashes, failures of medical devices and malfunctioning automotive systems are just a few examples of incidents that affect system safety. They are often due to component failures and unexpected interactions of subsystems under conditions that have not been anticipated during system design and testing. Determining the root cause(s) of a system-level failure and elucidating the exact scenario that led to the failure is today a complex and tedious task that requires significant expertise. Formal approaches for automated causality analysis, fault localization, explanation of events, accountability and blaming have been proposed independently by several communities - in particular, AI, concurrency, model-based diagnosis, software engineering, security engineering and formal methods. Work on these topics has significantly gained speed during the last years.

The goals of this workshop are to bring together and foster exchange between researchers from the different communities, and to present and discuss recent advances and new ideas in the field.

Logic programming is a framework for expressing programs, propositions and relations as Horn clause theories, with the purpose of performing automatic inference in these theories. The aim of this workshop is to bring together researchers that work on extensions of logic programming and inference methods, and to foster an exchange of methods and applications that have emerged in different communities.

This conference has been cancelled due to the Corona crisis.

There has been a recent move in philosophy of science towards views that in some sense reject the strict dichotomy between realism and anti-realism, or otherwise situate themselves between these two extremes. These include varieties of structuralism, perspectivalism, and pluralism/relativism, and have been applied across various scientific domains, including physics, mathematics, biology, cognitive science, and computer science. This conference will bring together representatives of each of these viewpoints, in order to compare the respective progress made by each approach, and to develop a shared foundation for the future development of alternatives to traditional scientific realism and anti-realism.

Confirmed Keynote Speakers: James Ladyman (Bristol), Michela Massimi, (Edinburgh) and Martin Kusch (Vienna).

EvoStar comprises of four co-located conferences run each spring at different locations throughout Europe. These events arose out of workshops originally developed by EvoNet, the Network of Excellence in Evolutionary Computing, established by the Information Societies Technology Programme of the European Commission, and they represent a continuity of research collaboration stretching back over 20 years. EvoStar is organised by SPECIES, the Society for the Promotion of Evolutionary Computation in Europe and its Surroundings. This non-profit academic society is committed to promoting evolutionary algorithmic thinking, with the inspiration of parallel algorithms derived from natural processes. It provides a forum for information and exchange.

The four conferences include:
 - EuroGP 23rd European Conference on Genetic Programming
 - EvoApplications 23rd European Conference on the Applications of Evolutionary and bio-inspired Computation
 - EvoCOP 20th European Conference on Evolutionary Computation in Combinatorial Optimisation
 - EvoMUSART 9th International Conference (and 14th European event) on Computational Intelligence in Music, Sound, Art and Design

Asian Workshop on Philosophical Logic (AWPL) is an event-series initiated by a group of Asian logicians, and in 2012 the first installment took place at the JAIST in Japan. It is devoted to promote awareness, understanding, and collaborations among researchers in philosophical logic and related fields. The workshop emphasizes the interplay of philosophical ideas and formal theories. Topics of interest include non-classical logics, philosophical logics, algebraic logics, and their applications in computer science, cognitive science, and social sciences.

The AWPL 2020 workshop is an event in the Zhejiang Logic for AI Summit. All AWPL participants are invited to attend other events as well.

Due to the current situation of the novel coronavirus pneumonia, it is believed that ZJULogAI cannot take place as scheduled. The conference and all its sub-events, including AWPL 2020, will be rescheduled (most likely to Q3 or Q4 2020).

We invite contributions to a Special Issue of Bulletin of the Section of Logic (BSL): „Reasoning about social phenomena”. BSL is an international logical journal published from 1972 (Editior-in-chief: Andrzej Indrzejczak).

High quality research papers concerning applications of logic to social phenomena, including, but not limited to, the following topics, are welcome:
– philosophical logic (deontic, epistemic, causal, probabilistic etc) within social context,
– multi agent logics,
– non-monotonic reasoning (particularly to cognitive science),
– formal social sciences,
– formal ethics.

Due to the current situation of the novel coronavirus pneumonia, it is believed that ZJULogAI cannot take place as scheduled. The conference and all its sub-events, including GCAI 2020, will be rescheduled (most likely to Q3 or Q4 2020).

The 6th Global Conference on Artificial Intelligence (GCAI 2020) will be held in Hangzhou, China, 6-9 April 2020, as part of the Zhejiang Logic for AI Summit (ZjuLogAI 2020). With its special focus theme on "Explainable AI and Responsible AI", the summit intends to promote the interplay between logical approaches and machine learning based approaches in order to make AI more transparent, responsible and accountable.

Note: Due to the current situation of the novel coronavirus pneumonia, it is believed that ZJULogAI cannot take place as scheduled. The conference and all its sub-events, including CLAR 2020, will be rescheduled (most likely to Q3 or Q4 2020).

CLAR 2020 will be held in Hangzhou, as part of the Zhejiang Logic for AI Summit (ZJULogAI 2020). With a special focus on 'methods and tools for explainable AI', a core objective of ZJULogAI is to present the latest developments and progress made on the crucial question of how to make AI more transparent, trustworthy and accountable, both in China as well as in the rest of the world. All participants to CLAR 2020 have access to all other events of ZJULogAI as well.

CLAR 2020 conference highlights recent advances in the two fields of logic and argumentation and promotes communication between researchers in logic and argumentation within and outside China.

The purpose of BCTCS is to provide a forum in which researchers in theoretical computer science can meet, present research findings, and discuss developments in the field. It also aims to provide an environment in which PhD students can gain experience in presenting their work, and benefit from contact with established researchers.

The scope of the colloquium includes all aspects of theoretical computer science, including automata theory, algorithms, complexity theory, semantics, formal methods, concurrency, game theory, types, languages and logics.

BCTCS 2020 is being held together with the Fourth AlgoUK workshop which includes a session on Verification of Railway Control Systems. There will also be a special evening public forum on Formal Methods in Software Engineering.

ICDT is an international conferences series that addresses the principles and theory of data management. Since 2009, it is annually and jointly held with EDBT, the international conference on extending database technology.

As ICDT strives to broaden its scope, ICDT 2020 will have a Reach Out Track that calls for novel formal frameworks or directions for database theory and/or connections between principles of data management and other communities.

Due to the current situation regarding the Coronavirus, the physical meeting for EDBT/ICDT 2020 in Copenhagen has to be canceled. However, EDBT/ICDT 2020 as a conference is NOT canceled, but will be held as an online event.

Due to the Coronavirus outbreak, the workhop is cancelled!

Around thirty years after the fall of Hilbert's program, the proofs-as-programs paradigm established the view that proofs should consist in computational or epistemic objects conveying evidence to mathematical propositions. The relationship between formal derivations and proofs should then be analogous to the one between words and their meanings. This view naturally gives rise to questions such as 'which conditions should a formal arrangement of symbols satisfy to represent a proof?' or 'when do two formal derivations represent the same proof?'. These questions underlie past and current research in proof theory both in the theoretical computer science community (e.g. categorical logic, domain theory, linear logic) and in the philosophy community (e.g. proof-theoretic semantics).

In spite of these common motivations and historical roots, it seems that today proof theorists in philosophy and in computer science are losing sight of each other. This workshop aims at contributing to a renaissance of the interaction between researchers with different backgrounds by establishing a constructive environment for exchanging views, problems and results.

In addition to regular invited talks, the workshop includes two tutorials, aimed at introducing recent ideas on the correspondence between proofs, programs and categories as well as to the historical and philosophical aspects of the notions of infinity and predicativity.

Intersection types were introduced near the end of the 1970s to overcome the limitations of Curry's type assignment system and to provide a characterization of the strongly normalizing terms of the Lambda Calculus.

Although intersection types were initially intended for use in analyzing and/or synthesizing lambda models as well as in analyzing normalization properties, over the last twenty years the scope of the research on intersection types and related systems has broadened in many directions.

The ITRS 2020 workshop aims to bring together researchers working on both the theory and practical applications of systems based on intersection types and related approaches. ITRS workshops have been held every two years.

LATA is a conference series on theoretical computer science and its applications. LATA 2020 will consist of invited talks and peer-reviewed contributions, and reserve significant room for young scholars at the beginning of their career. It will aim at attracting contributions from classical theory fields as well as application areas.

The TYPES meetings are a forum to present new and ongoing work in all aspects of type theory and its applications, especially in formalised and computer assisted reasoning and computer programming. The ITRS 2020 workshop aims to bring together researchers working on both the theory and practical applications of systems based on intersection types and related approaches. Part of the program is organised under the auspices of EUTypes.

Invited speakers: Ulrik Buchholtz, Pierre Marie-Pédrot, Leonardo de Moura and Sara Negri.

The 21st Workshop on the Roots of Pragmasemantics will be held on the top of the Szrenica mountain in the Giant Mountains on the border of Poland and the Czech Republic on February 28 - March 2, 2020. On top of our general theme, this year's special theme is Reference.

This year's invited speakers are:

Maria Aloni (University of Amsterdam)
Ethan Nowak (King's College London)
Peter Sutton (Heinrich Heine University Düsseldorf)
Sarah Zobel (University of Oslo)

Computational and technological developments that incorporate natural language are proliferating. Adequate coverage encounters difficult problems related to partiality, underspecification, and context-dependency, which are signature features of information in nature and natural languages. Furthermore, agents (humans or computational systems) are information conveyors, interpreters, or participate as components of informational content. Generally, language processing depends on agents' knowledge, reasoning, perspectives, and interactions.

This ICAART 2020 Special Session covers theoretical work, applications, approaches, and techniques for computational models of information and its presentation by language (artificial, human, or natural in other ways). The goal is to promote intelligent natural language processing and related models of thought, mental states, reasoning, and other cognitive processes.

Peano's axioms for arithmetic, published in 1889, are ubiquitously cited in the writings on modern axiomatics. And his Formulary is often quoted as the precursor of Russell's Principia Mathematica, but a comprehensive historical and philosophical evaluation of the contributions of the Peano School to mathematics, logic, and the foundation of mathematics is still to be achieved.

Several reasons explain the loss of philosophical interest for the member of the school: the non-academic nature of the group, the multiform topics of interest (going from mathematical analysis to geometry, from linguistics to universal languages, from philosophical pragmatism to logicism), the scarce attention given to the transformation of mathematics and to the development of set theory after 1910, and the non monolithic philosophical perspective developed in the school. Yet the views held by Peano and other members of the school not only had a strong impact on the writings by Frege, Russell, Carnap and Gödel, but can also be fruitfully explored in order to understand the development of certain philosophical isms, such as logicism and structuralism.

The thematic issue will publish two kinds of contributions: historical analyses of the logical, mathematical, foundational and didactical writings by Peano and the members of the school; philosophical investigations on the relation between Peano's axiomatics and the approaches by Dedekind, Frege, Hilbert, Russell, Carnap, and Gödel. Manuscripts should be submitted in French, English, or German, and prepared for anonymous peer review.

The FoIKS symposia provide a biennial forum for presenting and discussing theoretical and applied research on information and knowledge systems. The goal is to bring together researchers with an interest in this subject, share research experiences, promote collaboration and identify new issues and directions for future research.

Davide Rizza and Matt Parker are editing one of the forthcoming EJPS (European Journal of Philosophy of Science) topical collections, on "Dimensions of Applied Mathematics".

Philosophical interest in the application of mathematics has usually been connected to indispensability arguments or Wigner’s famous puzzle of ‘unreasonable effectiveness’. In both cases the success of mathematical applications has been taken as a  starting point for philosophical reflection and, as a result, little attention has been paid to the practice of applying mathematics in the course of scientific enquiry. This special issue is devoted to exploring the latter, relatively neglected topic. We encourage submissions, especially from non-mainstream areas of philosophy of science and/or from under-represented groups, discussing any of the dimensions (historical, foundational and practical) of applied mathematics.

Note: Deadline has been extended to 30 June.

We are happy to announce the Fifth Workshop on Generalised Baire Spaces! This will take place on the 3rd and 4th of February 2020 at the University of Bristol. The focus of this year's workshop is on connections with model theory and infinite combinatorics.

The main speakers are David Aspero (Norwich), Vincenzo Dimonte (Udine), Lorenzo Galeotti (Amsterdam), Philipp Lücke (Bonn), Miguel Moreno (Vienna), Luca Motto Ros (Torino), Isabel Müller (London), Sarka Stejskalova (Prague), and Dorottya Sziraki (Budapest).

Digital curation is a complex time and knowledge intensive process, in which knowledge workers create new content artifacts and knowledge insights from heterogeneous sources (content, data, knowledge). The work required for this includes, e.g., selecting, summarizing, scheduling, translating, localising, structuring, condensing, enriching, visualizing and explaining the various contents, from sources such as online newspapers, news portals, social media, linked data, business information systems, IoT data streams etc. AI, in particular from the field of language and semantic knowledge technologies, are used to support these tasks and thereby accelerate and qualitatively improve them.

The conference provides a forum on the use of digital curation technologies in application domains for, e.g., media, journalism, logistics, cultural heritage, health care and life sciences, energy, industry. Of particular relevance are papers that demonstrate the applied use of digital curation technologies and tools in domain-specific use cases and that bridge traditional boundaries between disciplines such as Artificial Intelligence and Semantic Web, data analytics and machine learning, information/content and knowledge management systems, information retrieval, knowledge discovery, and computational linguistics.

Keynote speakers: Gisele Secco (Univ. Federal de Santa Maria, Brasil), Jemma Lorenat (Pitzer College, USA), Øystein Linnebo (Univ. of Oslo, Norway), Jeremy Avigad (Carnegie Mellon University, USA), Vincenzo De Risi (Laboratoire SPHère, CNRS-Univ. Paris 7, France).

Computer Science Logic (CSL) is the annual conference of the European Association for Computer Science Logic (EACSL). It is an interdisciplinary conference, spanning across both basic and application oriented research in mathematical logic and computer science.

Kurt Gödel's unparalleled results in logic grant him a prominent place among logicians. Apart from extraordinary results in the theory of formal systems, he influenced research in set theory, non-classical logics, physical model of the universe, and in philosophy. The event is organised to commemorate the anniversaries (14 January) of the death of Kurt Gödel (Brno 1906 - Princeton 1978) as well as the birth of Alfred Tarski (Warsaw 1901 - Berkeley 1983); January 14 may thus be viewed as World Logic Day.

The journal "Logical Investigations" provides a platform for broad discussions of logical problems of both conceptual and purely theoretical nature. There are plans for a special issue of "Logical Investigations" devoted to logical and philosophical aspects of negation, Vol. 27(1), 2021.

Original papers are invited on negation related topics. Submissions should be written in English and should be submitted electronically as Pdf-documents generated from LaTeX using the style file LIarticle.cls. Papers should not exceed 20 pages in the above mentioned format (including all notes, the bibliography, and the abstract).

The International Symposium on Artificial Intelligence and Mathematics (ISAIM), is a biennial meeting that fosters interactions between mathematics, theoretical computer science, and artificial intelligence. This will be the sixteenth Symposium in the series, sponsored by Florida Atlantic University and the Annals of Mathematics and Artificial Intelligence. Traditionally, the Symposium attracts participants from a variety of disciplines, thereby providing a unique forum for scientific exchange. The three-day Symposium includes invited speakers, presentations of technical papers, and special topic sessions.

The LFCS series provides an outlet for the fast-growing body of work in the logical foundations of computer science, e.g., areas of fundamental theoretical logic related to computer science.

The aim of the colloquium is to bring together practitioners and researchers from academia, industry and government to present research results, and exchange experience, ideas, and solutions for their problems in theoretical aspects of computing. ICTAC also aims to promote research cooperation between developing and industrial countries.

The topics of the conference include, but are not limited to: - Languages and automata - Semantics of programming languages - Logic in computer science - Lambda calculus, type theory and category theory - Domain-specific languages - Theories of concurrency and mobility - Theories of distributed, grid and cloud computing - Models of objects and components - Coordination models Models of software architectures - Timed, hybrid, embedded and cyber-physical systems - Static analysis - Software verification - Software testing - Program generation and transformation - Model checking and automated theorem proving - Interactive theorem proving - Verified software, formalized programming theory

The ICTAC 2020 conference will be organised *virtually* by live presentations using Zoom.

The LMS Computer Science Colloquium is an annual day of themed talks on a topical issue at the interface of mathematics and computer science, organised by the LMS Computer Science Committee. The event is aimed at PhD students and post-docs, although others are welcome to attend.

The next colloquium will be held on Thursday 19th November 2020, 10am-4pm, and will be held online. The theme will be 'Algorithms, Complexity and Logic'. The speakers will be as follows:
- Nobuko Yoshida (Imperial College London) - Kitty Meeks (Glasgow) - Anupam Das (Birmingham) - Igor Carboni Oliveira (Warwick)

This workshop aims to provide an opportunity to discuss Field's program in light of recent developments in philosophy of mathematics, philosophy of physics, philosophy of logic, and metaphysics. Speakers include: Mark Colyvan, Mary Leng, Vera Flocke, Stephen Yablo, and Eddy Keming Chen. Hartry Field will also participate.

ZJULogAI 2020 (CLAR, AWPL, and GCAI) will take place as a three-day online event using Zoom on October 26 (Day 1), October 30 (Day 2), and November 2 (Day 3), 2020.

With their special focus theme on Explainable AI, the conferences:
 - CLAR2020 (Conference on Logic and Argumentation)
 - AWPL2020 (Asian Workshop on Philosophical Logic)
 - GCAI2020 (Global Conference on Artificial Intelligence)
intend to promote the interplay between logical approaches and machine learning-based approaches in order to make AI more transparent and accountable.

The European Network for the Philosophy of Language and Mind (PLM) organizes a workshop on Delusion in Language and Mind at the ILLC/University of Amsterdam, October 23--24.

The workshop includes 8 presentations on the subject plus detailed commentaries on the papers, both by expert members of the network. The workshop will be held on-line and on-location, if the situation permits.

Paradoxes seized the attention of logicians in the middle ages, and were used both as tests for the viability of theories of logic, language, epistemology, and possibly every philosophical issue, and also in the specific genre of insolubles as needing a theoretical solution, usually involving issues about signification, truth, knowledge and modality. Numerous theories were developed, not only in the Latin West, but also in the Islamic world and in the Byzantine tradition. Some of these theories are well known, others barely investigated, if at all. This workshop is an opportunity to discuss and contrast a range of these theories and consider their advantages and drawbacks, and their relation to more recent theories of paradox and antinomy.

The Mathematical Institute of the Georg-August-University Göttingen organizes a "Hilbert-Bernays Summer School on Logic and Computation" as an online event. This summer school offers a unique opportunity for undergraduate and graduate students to experience compelling lectures on Logic and Computation.

Encouraged by previous years of success, we offer students from all over the world the possibility to sign up this 1-week (3 ECTS) Summer School course covering topics such as: Gödel's Incompleteness Theorems, The Axioms of Zermelo and Fraenkel, Recursion and Complexity and Connexive logic. Students may anticipate a high professional outcome in a dedicated international environment.

The organization of the autumn school on logic and constraint programming invites you to participate in this year's school. co-located with ICLP. It promises to be an interesting session -- for students, as well as for more senior researchers -- in which Marc Denecker discusses the informal semantics of logic programs (is negation-as-failure actually classical?), Peter Stuckey takes on the role of Trojan horse, convincing us to use Minizinc instead of logic programming, Martin Gebser provides unique insights in the magic he uses for tackling industrial applications with answer set programming, and Elena Bellodi will probably talk about probabilistic logic programming.

The courses will be run as a hybrid model in which the first two hours are thought live, and for the last two hours, a recording will be made available.

The organization of the *Autumn School on Logic and Constraint Programming* invites you to participate in this year's school (September, 18-19, virtually in Calabria), co-located with ICLP. It promises to be an interesting session -- for students, as well as for more senior researchers -- in which Marc Denecker discusses the 'informal semantics' of logic programs (is negation-as-failure actually classical?), Peter Stuckey takes on the role of Trojan horse, convincing us to use 'Minizinc' instead of logic programming, Martin Gebser provides unique insights in the magic he uses for tackling 'industrial applications' with answer set programming, and Elena Bellodi will probably talk about 'probabilistic logic programming'.

The courses will be run as a hybrid model in which the first two hours are thought live, and for the last two hours, a recording will be made available.

The 22nd International Conference on Knowledge Engineering and Knowledge Management concerns all aspects of eliciting, acquiring, modeling and managing knowledge, and the role of knowledge in the construction of systems and services for the semantic web, knowledge management, e-business, natural language processing, intelligent information integration, and so on.

The special theme of EKAW 2020 is "Ethical and Trustworthy Knowledge Engineering". While recent reported breaches relate predominantly to machine learning systems, it is not impossible to envision ethical breaches in knowledge engineering more broadly and, conversely, devise methods and techniques to ensure no or minimal harm in knowledge acquisition, modelling, and knowledge-driven information systems. EKAW 2020 will put a special emphasis on the importance of Knowledge Engineering and Knowledge Management to keep fostering trustworthy systems.

There will be two workshops at EKAW 2020: the 5th International Workshop on Ontology Modularity, Contextuality, and Evolution (WOMoCoE), and the Workshop on Scalable Knowledge Graph Engineering (SKALE).

The summer school is a major event of the Tbilisi Autumn of Logic organised by the Kurt Gödel Society. This summer school is directed towards the audience of young researchers of LATD 2020. For young researchers the summer school is covered by the registration fees of LATD 2020. For additional participants the fee is Euro 150, for Georgian participants a limited number of free registrations is provided.

Confirmed lecturers: Bahareh Afshari (University of Amsterdam), Thomas Eiter (nominated, TU Wien), Christian Fermüller (TU Wien), Daniele Mundici (University of Florence), Norbert Preining (Accelia Inc.), James Raftery (University of Pretoria).

COVID-19 note: it is likely that the summer school will be shifted to the end of September, as it is assumed that the restriction to Universities is lifted by then. More information will be available on the summer school website at the beginning of September.

This is the ninth edition of a series of workshops organized by the Buenos Aires Logic Group (BA LOGIC), aiming to bring together researchers to discuss different topics on philosophical logic, mainly connected with semantic paradoxes, theories of truth and non-classical logics. We would like to invite you as well to a satellite Workshop on Substructural Logics and Metainferences to be held on August 28th.

The workshop brings together new developments in theoretical and experimental investigations on conditionals and reasoning in the areas of philosophy, psychology, logic, and probability theory. Its specific emphasis is on exploring relations between qualitative and quantitative approaches to conditionals - logical (broadly construed) and probabilistic - and their application to the empirical analysis of human reasoning. The event is part of the project 'Qualitative and Quantitative Approaches to Reasoning and Conditionals' at the chair of Prof. Hans Rott in Regensburg.

This 6-day research-oriented course is designed to familiarize participants with the latest advances in the philosophical debates about identity and related matters. The specific topics to be discussed will be the logic of identity and identity and modality; identity and essence; identity and indiscernibility; time, composition and identity; and personal identity. The course will be delivered by five leaders in their fields, and they will not only introduce those topics but also discuss their latest research on them. Time permitting, selected participants may have occasion to present their own research.

Due to the COVID-19 pandemic the course has been postponed.

Undergraduates from underrepresented groups are invited to study logic -- five topics over five days, with ten top international instructors -- at Northeastern University for one week in the summer of 2020.

Instructors and Topics:
 - Jessica Collins & Lisa Cassell: "The Logic of Belief Revision"
 - Joshua Schechter & Julia Staffel: "Logic & Epistemology"
 - Gillian Russell & Tamar Lando: "Logic & Language"
 - Erica Shumener & Eliya Cohen: "Logic & Metaphysics"
 - Audrey Yap & Cat Saint-Croix: "Logic & Feminism"

Because of COVID-19, the organizers have decided to postpone PIKSI-Logic 2020 to the summer of 2021.

CAV 2020 is the 32nd in a series dedicated to the advancement of the theory and practice of computer-aided formal analysis methods for hardware and software systems. The conference covers the spectrum from theoretical results to concrete applications, with an emphasis on practical verification tools and the algorithms and techniques that are needed for their implementation. Along with the main conference, CAV will feature eight workshops (in addition to the Verification Mentoring Workshop) and tutorials.

There will be introductory, intermediate and advanced courses in a variety of linguistic subfields.

Unfortunately, we have to cancel CreteLing2020 due to the international COVID crisis.

The São Paulo School of Advanced Science on Contemporary Logic, Rationality and Information – SpLogIC – is promoted by the Centre for Logic, Epistemology and the History of Science (CLE) of the University of Campinas (Unicamp), Brazil, to be held from July 13th to 24th, 2020. The program comprises nine courses and nine plenary talks ministered in English by experts in each topic, as well as oral presentations (LED Talks) and poster sessions delivered by students.

Undergraduate and graduate students, and postdoctoral fellows (up to 5 years after completion of the Ph.D) from all countries are encouraged to apply. The event will select 100 fully-funded participants (50 grantees from all states of Brazil and 50 international grantees). Funding includes airfare, medical insurance, accommodation and meals throughout the event.

Priority will be given to candidates currently enrolled in graduate programs (Masters/M.Sc. and Doctorate/Ph.D.) and currently developing a thesis or dissertation in the fields of the event. The applicant’s country of origin will also be taken into consideration, in order to include participants from all continents.

Due to the measures taken regarding the COVID-19 pandemic, the Organizing and Advisory Committees decided to postpone the realization of the São Paulo School of Advanced Science on Logic, Rationality, and Information – SPLogIC.

ETAPS is the primary European forum for academic and industrial researchers working on topics relating to software science.

To compensate for the cancelled physical ETAPS 2020 conference in Dublin, we will hold a 3-hour virtual event to hand out the awards of the conference and listen to talks by the best paper award winners. The presentations will be streamed live. Questions to presenters can be asked in a chat. The event will be recorded and can be watched later.

The purpose of the Reasoning Web Summer School is to disseminate recent advances on reasoning techniques and related issues that are of particular interest to Semantic Web and Linked Data applications. It is primarily intended for postgraduate (PhD or MSc) students, postdocs, young researchers, and senior researchers wishing to deepen their knowledge. In 2020, the broad theme of the school is: 'Declarative Artificial Intelligence'. As in the previous years, lectures in the summer school will be given by a distinguished group of expert lecturers.

The school is co-located with RuleML+RR 2020 and DecisionCAMP 2020, as part of the Declarative AI 2020 event. The students attending the RW school are particularly encouraged to apply to the Doctoral Consortium of RuleML+RR (deadline: 22 May, 2020). Due to the current situation regarding the spread of the COVID-19 coronavirus, Declarative AI 2020 will be held as an ONLINE event.

We would like to invite you to the next European Symposium of Medieval Logic and Semantics, which will take place at the University of Warsaw on 22-25 June 2020. The topic of the conference is 'Time, Tense, and Modality', and covers logical, semantical, and grammatical problems related to time. It is meant to include a wide range of issues occurring in medieval writings, not restricted to narrowly understood field of artes.

In view of the measures related to the COVID-19 pandemic we hereby officially postpone the 23rd European Symposium of Medieval Logic and Semantics for June 21-24, 2021.

Descriptive set theory discusses the relationship between logical complexity and good behaviour of sets, so-called regularity properties (e.g. Lebesgue measurability, perfect set property, etc.). It is well known that these properties are closely connected to forcing (and in some cases, large cardinals). Modern developments in set theory such as forcing, large cardinals and determinacy give powerful techniques to tackle problems in descriptive set theory. In recent years, set theorists have generalised classical results of descriptive set theory to generalised reals.

Speakers: 1. Vera Fischer (Vienna) 2. Yurii Khomskii (Hamburg & Amsterdam) 3. Dominique Lecomte (Paris) 4. Heike Mildenberger (Freiburg) 5. Dorottya Sziraki (Budapest) 6. Wolfgang Wohofsky (Vienna) 7. Jindrich Zapletal (Gainesville FL) 8. Zoltan Vydnyanszky (Vienna)

Due to the Covid-19 pandemic, the HSTW 2020 will be held online as a Zoom webinar with several zoom meetings as substitute for social events, like cofeebreaks/lunch. Further information about the conference format can be found on the conference homepage.

In this online masterclass, each of the 14 participating graduate students will write a research paper under the supervision of expert mentors from philosophy of science and philosophy of mathematics. Students can apply for different mentors and they will be matched with the mentors according to their interests.

The overarching theme of this masterclass is an analysis of a 'practical turn' in the philosophy of mathematics. Is this turn analogous to the practical turn in philosophy of sciences? Should it be? What are the exact roles of the actual empirical studies of mathematical practice (f.i. in mathematics education, sociology of mathematic, etc.)? How should these interact with the philosophy of mathematics?

We want to encourage work looking at the following three areas: First, we want to draw attention to the seminal work of Imre Lakatos. In addition to that we want to encourage work on the interplay of the philosophy of mathematics and the philosophy of science. Another possible string of investigation is the analysis of new scientific methodologies in the philosophy of mathematics.

Computational complexity theory was born more than 50 years ago when researchers started asking themselves what could be computed efficiently. Classifying problems/functions with respect to the amount of resources (e.g. time and/or space) needed to solve/compute them turned out to be an extremely difficult question. This has led researchers to develop a remarkable variety of approaches, employing different mathematical methods and theories.

The future development of complexity theory will require a subtle understanding of the similarities, differences and limitations of the many current approaches. The goal (and peculiarity) of the Caleidoscope school is to reunite in a single event as many different takes on computational complexity as can reasonably be fit in one week. The school is aimed at graduate students and researchers who already work in some aspects of computational complexity and/or who would like to learn about the various approaches.

We are sorry to announce that, due to the ongoing COVID-19 epidemic, the 2020 edition of the Caleidoscope school is CANCELLED.  We hope we will be able to propose these great lectures in the summer of 2021.

The University of Bergen in Norway is hosting a PhD course on Dynamic Syntax, a grammar formalism which aims to capture the real-time parsing/production of language. The course will be of particular interest to those working in syntax, semantics and the syntax-semantics interface, as well as natural language modelling and computational linguistics, but is open to all.

Any interested PhD candidate or postdoctoral researcher who is currently enrolled or employed at a university is welcome to register and take part in the course. All participants who attend the course and complete the written and oral assignment will be awarded 5 ECTS.

This will be a 4-day course that takes place in the autumn of 2020. The exact course dates will be announced in the next couple of months.

This conference has been postponed due to COVID-19.

Keynote speaker: Crispin Wright (University Stirling & NYU)

Other confirmed speakers include: .Roy T. Cook (University of Minnesota), Fiona Doherty (University of Stirling), Sean Ebels-Duggan (Northwestern University), Richard K. Heck (Brown University), Graham Leach-Krouse (Kansas State University), Paolo Mancosu (UC Berkeley), Fraser McBride (University of Manchester; via Skype), Eileen Nutting (University of Kansas), Walter Pedriali (University of St. Andrews), Agustí­n Rayo (MIT), Marcus Rossberg (University of Connecticut), William Stirton (Independent Scholar), James Studd (Oxford), Alan Weir (University of Glasgow), Sean Walsh (UCLA) and Robbie Williams (University of Leeds; via Skype).

The aim of this NSF-funded workshop is to bring together philosophers, psychologists and education researchers who are working on mathematical explanation.

Speakers & discussants: - Jessica Carter (University of Southern Denmark) - Mark Colyvan (University of Sydney) - Silvia De Toffoli (Princeton University) - Joachim Frans (Vrije Universiteit Brussel) - Matthew Inglis (Loughborough University) - Marc Lange (UNC - Chapel Hill) - Tania Lombrozo (Princeton University) - Alexander Renkl (University of Freiburg) - Bethany Rittle-Johnson (Vanderbilt University) - Keith Weber (Rutgers University) - Orit Zaslavsky (New York University).

The Zhejiang Conferences on Logics in Artificial Intelligence (ZjuLogAI 2020) is organized by the Zhejiang University - University of Luxembourg Joint Laboratory on AIs, Robotics and Reasoning (ZLAIRE). With its special focus theme on Explainable AI, the summit intends to promote the interplay between logical approaches and machine learning based approaches in order to make AI more transparent and accountable.

ZJULogAI consists of
- 5th Asian Workshop on Philosophical Logic (AWPL 2020)
- 3rd International Conference on Logic and Argumentation (CLAR 2020)
- 6th Global Conference on Artificial Intelligence (GCAI 2020)
ZjuLogAI will be accompanied by an AI and ART exhibition demonstrating the latest application of AI and robotics.
Keynotes (confirmed): Gabriella Pigozzi (Université Paris Dauphine) and Fei Wu (Zhejiang University)

Due to the current situation of the novel coronavirus pneumonia, ZJULogAI cannot take place as scheduled. The conference and all its sub-events will be rescheduled.

Cancelled due to Corona, to be rescheduled.

Organized by John P. Burgess and Silvia De Toffoli

Speakers: Jeremy Avigad (Carnegie Mellon University), Silvia De Toffoli (Princeton University), Marcus Giaquinto (University College London), Juliette Kennedy (Helsinki University), Saul Kripke (CUNY Graduate Center), Danielle Macbeth (Haverford College), Paolo Mancosu (UC Berkeley), Friederike Moltmann (CNRS / New York University), Ben Morison (Princeton University), Marco Panza (CNRS / Chapman University), Richard Pettigrew (Bristol University) and Sun-Joo Shin (Yale University).

This meeting has been cancelled due the coronavirus outbreak.

The 11th SEEMOD (South and East of England Model Theory) workshop will take place at the University of East Anglia on 23rd March. The speakers are: Alexis Chevalier (Oxford) , Mark Kamsma (UEA), Charlotte Kestner (Imperial College London), Vincenzo Mantova (Leeds), and Nicholas Ramsey (UCLA).

Cancelled due to the Corona crisis.

This Masterclass in proof theory (MCPT) is primarily aimed at graduate students and early career researchers in mathematics, philosophy, and computer science with an interest in foundational questions in mathematics. The four-day event consists of introductory classes on proof theory by Michael Rathjen (Leeds) on 'Proof Theory: From Arithmetic to Set Theory' and Peter Schuster (Verona) on 'The finite content of transfinite methods'. These will be enriched through advanced evening lectures by other senior researchers, incl. Norbert Gratzl (MCMP, LMU Munich) and Helmut Schwichtenberg (LMU Munich). The event will take place on the premises of the Carl Friedrich von Siemens Foundation, right next to Munich's picturesque Nymphenburg Palace and Gardens.

Graduate students in mathematics can apply for participation scholarships of E150 funded by the German Mathematical Association (DMV).

The theoretical aspects of disagreements in fields such as ontology, logic, epistemology, and ethics have already received extensive treatment in the philosophical literature. There is a plethora of views debated at an increased level of sophistication at a very high level of abstraction (e.g. conciliationist vs steadfast views in the epistemology of disagreement). What is much less discussed are the practical consequences of these theoretical models of disagreement. The conference 'Disagreements: from Theory to Practice' aims to bridge the gap between theory and practice and inquire into the implications of theoretical positions for real life disagreements. Our confirmed speakers include Margit Sutrop, Daniel Cohnitz and Folke Tersman.