Cech Fuzzy Soft Bi-Closure Spaces

Abstract

Abstract In the present study, Čech fuzzy soft bi-closure spaces (Čfs bi-csp’s) are defined. The basic properties of Čfs bi-csp’s are studied such as we show from each Čfs bi-csp’s (u, L1, L2, S) we can obtain two types of associative fuzzy soft topological spaces, the first is a fuzzy soft bitopological space (U, τL1 , τL2 , S) and the second is a fuzzy soft topological space (U, τL1 L2 , S). Also, the concepts of the fuzzy soft interior, subspace, and continuity which are the building blocks of classical bi-closure spaces are defined on Čfs bi-csp’s. Besides, several examples have been given so that the subject can be better understood.