Modal logic, an extension of classical logic, investigates the modes of truth such as necessity and possibility. Its development has been closely intertwined with advances in proof theory, a field ...

A simple, bivalent semantics is defined for Łukasiewicz's 4-valued modal logic Łm4. It is shown that according to this semantics, the essential presupposition underlying Łm4 is the following: A is a ...

The goal of this topics course is to study the foundations of different types of logics used commonly in artificial intelligence. Logic forms the basis for many types of reasoning used by humans – ...