Speaker: Tomasz Klochowicz (ILLC, University of Amsterdam)
Date and Time: Thursday, December 4th 2025, 16:30-18:00
Venue: ILLC Seminar Room F1.15, Science Park 107 and online.
Title: Non-empty beliefs and belief revision using BSML.
Abstract. In this talk, I propose a formal framework for belief revision using team semantics, which postulates that in belief ascriptions we systematically neglect beliefs that are supported by an empty witness-set of possible worlds in our information state. I show that this framework can account for most inferences that hyperintensional frameworks are designed to explain and some additional inferences like possibility implications of disjunctive beliefs, which topic- or aboutness-based frameworks may have trouble accounting for.