S4 is a modal logic system defined by reflexivity and transitivity axioms for its accessibility relation. This system implies that…
Normal modal logic is a foundational system in logic that incorporates rules like necessitation and distribution axioms. It enables the…
Modal logic is a branch of logic that formally explores concepts like necessity, possibility, and obligation. It uses modal operators…
A Kripke structure is a mathematical model representing systems with multiple states and transitions. It's fundamental to Kripke semantics in…
A formal framework for modal logic using possible worlds. Developed by Saul Kripke, it enables rigorous analysis of necessity, possibility,…