Uninorm Operations on Type-2 Fuzzy Sets

Type-2 fuzzy set theory is a possibility to eliminate the paradox of the type-1 fuzzy sets, that the membership grades are themselves precise real numbers. This fuzzy-fuzziness approach together with new types of fuzzy operators opens new horizons in the fuzzy systems applications. In the paper a short review of the basic notations of type-2 fuzzy sets and the representation of uninorm operation on those sets is given.