This paper represents the terminology and representations of the interval type-2 fuzzy sets as a special case of the general type 2 fuzzy sets. There are shown the basic operations over interval type-2 fuzzy sets and their conformity to operations over type 1 fuzzy sets. Considered the terminology, representations of interval type-2 fuzzy sets and operations over these sets are a basis for research and designing of fuzzy logic systems on the basis of interval type 2 fuzzy sets.
the interval type-2 fuzzy set, footprint of uncertainty, operation of union, operation of intersection, operation of complement
"Yntervalnыe nechetkye mnozhestva typa 2. Termynolohyia, predstavlenye, operatsyy" ,
Information Processing Systems,