Generalized fuzzy b-closed and generalized ?-fuzzy b-closed sets in double fuzzy topological spaces

摘要

The purpose of this paper is to introduce and study a new class of fuzzy sets called (r,s)-generalized fuzzyb-closed sets and (r,s)-generalized ?-fuzzyb-closed sets in double fuzzy topological spaces. Furthermore, the relationships between the new concepts are introduced and established with some interesting examples.