Acta Mathematica Vietnamica

Acta Mathematica Vietnamica

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UNIFORM NORMAL STRUCTURE AND FIXED POINTS OF NONEXPANSIVE MAPS IN A GENERAL TOPOLOGICAL SPACE $(X, \tau)$ WITH A $\tau$-SYMMETRIC FUNCTION

M. AAMRI, D. EL MOUTAWAKIL

pp. 27-33

Abstract

The main purpose of this paper is to define the concept of uniform normal structure and give some new fixed point theorems of nonexpansive maps in a general topological space $(X, \tau)$ with a $\tau$-symmetric function.