Applications of soft sets in ideal theory of BCK/BCI-algebras

The notion of soft ideals and idealistic soft BCK/BCI-algebras is introduced, and several examples are given. Relations between soft BCK/BCI-algebras and idealistic soft BCK/BCI-algebras are provided. The intersection, union, AND operation, and OR operation of soft ideals and idealistic soft BCK/BCI-algebras are established. (c) 2008 Elsevier Inc. All rights reserved.