COMMON FIXED POINTS FOR FOUR NON-SELF-MAPPINGS IN PARTIAL METRIC SPACES

Abstract

In this paper, we formulate a common fi xed point theorem for four non-self mappings in convex partial metric spaces. The result extends a fi xed point theorem by Gajic and Rakocevic [Pair of non-self mappings and common fi xed points. Appl. Math. Comp. 187 (2007), 999-1006] proved for two non-self mappings in metric spaces with a Takahashi convex structure. We also provide an illustrative example on the use of the theorem.