Fuzzy Sets and Fuzzy Logic. A Commemorative Special Issue in Honor of 100th Anniversary of the Birth of Professor Lotfi A. Zadeh, Creator of Fuzzy Sets and Fuzzy Logic

Dear Colleagues,

This Special Issue celebrates the 100th anniversary of the birth of Lotfi A. Zadeh, an eminent scientist of our time and a legendary “father” of fuzzy sets, fuzzy logic, and fuzzy systems.

In his seminal paper (1965) on objects with a continuum of grades of membership, Prof. Zadeh gave an outline of the mathematics of fuzzy set theory. Later he widened his vision and proposed fuzzy logic, an extension of the classic many-valued logic. Since then, many authors have developed the theory of fuzzy sets and fuzzy logic, and applied them in various areas of theory and practice.

The current theory of fuzzy sets and systems allows us to investigate and solve various optimization and decision-making problems under uncertainty in a purely mathematical way. Today this theory has a fascinatingly broad range of applications—in artificial intelligence, computer science, robotics, quantum physics, control theory, engineering, digital medicine, economics, ecology, and many more—practically in all areas of science and technology.

Concluding our brief introduction to this Special Issue, we would like to recall the words of Prof. Zadeh, which he declared repeatedly in his articles and keynote lectures and which he repeated to us personally during our unforgettable meetings with him: 

"To begin with, fuzzy logic is not fuzzy. Fuzzy logic is precise"

We invite everyone to submit their recent results on fuzzy sets, fuzzy logic, fuzzy systems, and their applications to this Commemorative Special Issue. 

Prof. Dr. Eugene Levner
Prof. Dr. Milan Vlach
Guest Editors

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