Exploring the Update Universe
Ji Ruan

Abstract:
In this thesis, the author shows how BMS framework models the cases of
message passing. He studies the sufficient and necessary conditions
for two action models to have the same update effects, and proposes a
structural relation between action models, named action emulation, to
capture the same update effects for the propositional case. Finally,
the author discusses the problem of update evolution and shows a
sufficient condition for the stabilization of update evolution.