New Topological Sets Close to ?-Open Sets

Abstract

This paper starts by introducing some topological sets that are very close to w-open and  w-closed sets in the sense of Hdeib. Moreover the notions of regular w*-open,  semi- w*-open, pre-w*-open, a-w*-open, b-w*-open, b- w*-open, *b-w*-open , b^#-w*-open sets and the corresponding closed sets are introduced and studied in this paper.