Two Approaches to Fuzzy Propositional Logics
Osef Hekrdla, Erich Peter Klement and Mirko Navara
We compare two approaches to fuzzy logics: R-fuzzy logics studied mainly by Hájek, and S-fuzzy logics introduced by Butnariu, Klement and Zafrany. We improve some previous results and we discuss satisfiability, compactness and related questions in these logics. Special attention is paid to the comparison of their semantics.