Equilibrium Semantics for IF Logic and Many-Valued Connectives
Abstract
We connect two different forms of game based semantics: Hintikka’s game for Independence Friendly logic (IF logic) and Giles’s game for Lukasiewicz logic. An interpretation of truth values in [0, 1] as equilibrium values in semantic games of imperfect information emerges for a logic that extends both, Lukasiewicz logic and IF logic. We prove that already on the propositional level all rational truth values can be obtained as equilibrium values.