Generalized ΨΡ-closed sets and generalized ΨΡ-open sets in double fuzzy topological spaces.

The aim of this paper is to use the notion of Ψ-operations in double fuzzy topological spaces to study the concept of (r,s)-fuzzy generalized ΨΡ-closed sets and (r,s)-fuzzy generalized ΨΡ-open sets, some characterizations and properties of these concepts are given. Moreover, we discussed the relationship between these sets in double fuzzy topological spaces. [ABSTRACT FROM AUTHOR]