The term" fuzzy logic," as it is understood in this book, stands for all aspects of representing
and manipulating knowledge based on the rejection of the most fundamental principle of …

In the last few decades many formal systems of fuzzy logics have been developed. Since the
main differences between fuzzy and classical logics lie at the propositional level, the fuzzy …

This paper surveys the present state of knowledge on propositional fuzzy logics extending
SBL with an additional involutive negation. The involutive negation is added as a new …

This paper is a contribution to Mathematical fuzzy logic, in particular to the algebraic study of
t-norm based fuzzy logics. In the general framework of propositional core and Δ-core fuzzy …

This paper is devoted to reasoning about fuzzy logic which is based on various personal
observations of the author. Our goal is to think of the state of the art in mathematical fuzzy …

The representation of human-originated information and the formalization of commonsense
reasoning has motivated different schools of research in Artificial or Computational …

On fuzzy modal logics S5(C) Page 1 Fuzzy Sets and Systems 161 (2010) 2389–2396 www.elsevier.com/locate/fss
On fuzzy modal logics S5(C) Petr Hájek Institute of Computer Science, Academy Sciences of …

The paper considers an early approach toward a (fuzzy) set theory with a graded
membership predicate and a graded equality relation which had been developed by the …

We present a method for mass proofs of theorems of certain forms in a formal theory of fuzzy
relations and classes. The method is based on formal identification of fuzzy classes and …

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