A fuzzy set is a concept in set theory, particularly in the field of fuzzy logic and fuzzy mathematics, that extends classical set theory. In classical set theory, an element either belongs to a set or does not belong to it; membership is a binary condition (1 for membership, 0 for non-membership). However, in fuzzy set theory, membership is not just a matter of being in or out of a set but can take on a range of values between 0 and 1.
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