Semi-open sets and semi-continuity in fuzzy bitopological spaces

(i, j)-Almost Continuity and (i, j)-Weakly Continuity in Fuzzy Bitopological Spaces

“…In [5], fuzzy (i, j)-semi open sets and fuzzy (i, j)-semi continuity in fuzzy bitopological spaces have been studied. In the present paper, we introduced the concepts of fuzzy regular open (closed) sets and studied fuzzy (i, j)-almost continuity and (i, j)-weakly continuity in fuzzy bitopological spaces.…”

“…If is a non-empty universal set, then a system consisting of set and two fuzzy topologies and on X is called a fuzzy bitopological space (see [4] closed set such that (see [5]). In this definition and in the rest of this paper we take i, j = 1, 2 & i j.…”

“…A fuzzy set is a fuzzy (i, j)-semi open set iff and fuzzy (i, j)-semi closed set iff (see [5]). (b) Every fuzzy (i, j)-regular closed set is a fuzzy -closed set, but converse need not be true.…”

“…Kandil [4] in 1989. Fuzzy (i, j)-semi open (closed) sets and fuzzy (i, j)-semi open (closed) maps in fuzzy bitopological spaces have been studied in [5].…”

Note on $p_1$-Lindelof spaces which are not contra second countable spaces in bitopology

“…Bitopological space has drawn the attention of many topologists ( [2], [5], [6], [7], [11], [13], [14], [15], [16], [17]), engineers, researchers in medical sciences [21], economists ([3], [18]), computer scientists [32] and many others including fuzzy set topologists ( [27], [28], [29]), rough set topologists [31].…”