Connections between interval valued fuzzy graphs and fuzzy groups with (S,T)-norms

Abstract

On the basis of the concept of the interval valued intuitionistic fuzzy sets introduced by K. Atanassov, the notion of interval valued intuitionistic fuzzy graphs with respect to t -norm T and s -norm S are given. Their characteristic properties are described. Also it is shown how to associate interval valued intuitionistic fuzzy sub(semi)groups with interval valued intuitionistic fuzzy graphs in a natural way.