LILaC - paper abstract

Introspective forgetting

Ditmarsch, Hans van and Herzig, Andreas and Lang, Jérôme and Marquis, Pierre


We model the forgetting of propositional variables in a modal logical context where agents become ignorant and are aware of each others’ or their own resulting ignorance. The resulting logic is sound and complete. It can be compared to variable-forgetting as abstraction from information, wherein agents become unaware of certain variables: by employing elementary results for bisimulation, it follows that beliefs not involving the forgotten atom(s) remain true.



A preliminary version of the paper was presented at