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Operations on type-2 fuzzy sets. (English) Zbl 1010.03047
Summary: We discuss set operations on type-2 fuzzy sets (including join and meet under minimum/product t-norm), algebraic operations, properties of membership grades of type-2 sets, and type-2 relations and their compositions. All this is needed to implement a type-2 fuzzy logic system (FLS).

MSC:
03E72 Theory of fuzzy sets, etc.
03B52 Fuzzy logic; logic of vagueness
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