INTERVAL VALUED INTUITIONISTIC (S*, T*)-FUZZY BI-IDEALS OF SEMIGROUPS

抄録

We introduce the notion of interval-valued fuzzy bi-ideals with respect to t-norm T* and s-norm S* and investigate some of the properties. The homomorphism image and inverse image are investigated. In particular, by the congruence relations on semigroups, new interval valued intuitionistic (S*, T*)-fuzzy bi-ideals are constructed.