Since the Introduction of fuzzy theory by Professor Lotfi Zadeh, Iranian professor of Berkley university , in 1965 this theory has faced a significant global development. Some of these improvements are as following: the entry of fuzzy theory in many fields of science and engineering, holding dozens of international conferences on fuzzy theory topics, publishing hundreds of scientific articles in scientific magazines, applying the theory in industry and constructing variety of equipments utilizing the logic of fuzzy theory.

Considering the constant growth of the theory and increasing public interest, scientific circles of countries all over the globe, are attracted to founding the related associations. As a result, dozens of scientific societies and working groups based on fuzzy theory have been established all over the world.......