Zoom Talk: Sena Bozdag (MCMP)

Please contact office.leitgeb@lrz.uni-muenchen.de for the password.

Title:

Reasoning with Fragmented Information States

Abstract:

 I will start with introducing a new semantics for belief formation and belief change. The formalisation depends on HYPE models enriched with a preference ordering and a belief modality. As a result, we obtain a theory which supports hyperintensional belief dynamics and allows belief states that are not deductively closed. In this talk, I will focus on the latter. Rejection of deductive closure as a rationality principle can be traced back to Lewis and Stalnaker, to the fragmented belief approach. Placing the focus of formalisation on possibly inconsistent and incomplete information states is a natural way to obtain fragmented belief states. While the models I introduce in the beginning contain fragmentation in the information level, I will explore ways of extending this to the belief level."