T-fuzzy ideals in BCI-algebras

The notion of BCI-algebras was introduced by Iséki [3] which is a generalization of BCKalgebras [2]. This notion is originated from two different ways: one of the motivations is based on set theory, another motivation is from classical and nonclassical propositional calculi. Zadeh [8] introduced the notion of fuzzy sets. Many researchers have applied this concept to mathematical branches, such as semigroup, loop, group, ring, semiring, field, near ring, vector spaces, topological spaces, functional analysis, automation. Jun et al. [4, 5] introduced the notions of fuzzy subalgebras and fuzzy ideals of BCK-algebras with respect to a t-norm T , and studied some of their properties. In this paper, we obtain some related results of T-fuzzy subalgebras and T-fuzzy H-ideals in BCI-algebras.