Anew Types of Contra Continuity in Bi-Supra Topological Space

Abstract

In this paper we introduce a new class of functions in bi-supra topological space called (contra-i[contra-ii]-continuous, contra-g-i[contra-g-ii]-continuous,contra-gα-i[contra-gα-ii]-continuous, contra-gr-i[contra-gr-ii]-continuous, contra-gb-i[contra-gb-ii]-continuous, contra-πg-i[contra-πg-ii]-continuous, contra-πgα-i[contra-πgα-ii]-continuous, contra-πgr-i[contra-πgr-ii]-continuouos, contra-πgb-i[contra-πgb-ii]-continuous) and we study the relation among these functions and the composition of these functions. At last many important theorems are proved.