IJ-w-Perfect Functions Between Bitopological Spaces

Abstract

In this paper we introduce a lot of concepts in bitopological spaces which are ij-ω-converges to a subset, ij-ω-directed toward a set, ij-w-closed functions, ij-w-rigid set, ij-w-continuous functions and the main concept in this paper is ij--perfect functions between bitopological spaces. Several theorems and characterizations concerning these concepts are studied.