Our aim of this paper is to continue the study of operations on generalized
semi open sets in bitopological spaces which was initiated in 2024 by
Khedr. New types of pairwise continuous and pairwise irresolute mappings
between two bitopological spaces by the concept of operations on
generalized semi open sets are introduced with some of their properties and
the relation between them are studied. Firstly, we introduce two concepts of
pairwise generalized semi operation continuous mappings between two
bitopological spaces with some of their properties and study the relation
between them. Secondly, we introduce two concepts of pairwise generalized
semi operation irresolute mappings between two bitopological spaces with
some of their properties and study the relation between them. Finally, we
introduce the notions of pairwise generalized semi operation closed
mappings and pairwise generalized semi operation open mappings between
two bitopological spaces and study some results and theorems.