On the approximation of fixed points of nonexpansive mappings

Abstract

Let B be a Banach space whose norm is uniformly Gateaux differentiable and T a nonexpansive mapping on a closed convex set C of B into itself with the fixed point property. Define a sequence (Xn) in C recursively by Xn+1 = alpha n X 0 + (1-alpha n)TXn, for n = 0, 1, 2, 3, ..., where alpha n is an element of [0,1] for each n and X0 C is arbitrary. In our investigation, we find a sufficient condition on (alpha n) to assure that (Xn) converges strongly to a fixed point of T