Fuzzy number

A fuzzy number is a concept in fuzzy set theory that represents quantities with uncertainty or vagueness. Unlike traditional crisp numbers, which have a precise value, fuzzy numbers allow for the representation of values that are not precisely defined, which is particularly useful in situations where information is imprecise or uncertain. A fuzzy number is typically characterized by a membership function that defines how each element in the universal set corresponds to a degree of membership within the fuzzy set.