An analytic study on the usage of fuzzy systems in holy Quran

There can be found some words in the common language of people in daily life with different degrees of validity. When considering them logically, one can not evaluate them based on two-valued logic. Fuzzy words and terms, being of many orders with regard to the standard of comparison, are of various cases of usage. On this basis, holy verses of Quran, including different fields of religious beliefs, social, economic, military, political, administrative, ethical and cultural problems, presents a special logic knowing it would lead man to attain true principles of thought. This paper intends to study some cases for using fuzzy logic in Quranic verses. Then, using fuzzy principles for making models of fuzzy systems, it has introduced some cases for them in the field of religious sciences to be assessed by religious scholars.