Communications of the
Korean Mathematical Society
CKMS

ISSN(Print) 1225-1763 ISSN(Online) 2234-3024

Article

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Commun. Korean Math. Soc. 2002; 17(1): 37-51

Printed March 1, 2002

Copyright © The Korean Mathematical Society.

Strong convergence theorems for locally pseudo-contractive mappings in Banach spaces

Jong Soo Jung

Dong-A University

Abstract

Let $X$ be a reflexive Banach space with a uniformly G\^ateaux differentiable norm, $C$ a nonempty bounded open subset of $X$, and $T$ a continuous mapping from the closure of $C$ into $X$ which is locally pseudo-contractive mapping on $C$. We show that if the closed unit ball of $X$ has the fixed point property for nonexpansive self-mappings and $T$ satisfies the following condition: there exists $z \in C$ such that $\Vert z - T(z)\Vert < \Vert x - T(x)\Vert$ for all $x$ on the boundary of $C$, then the trajectory $t \longmapsto z_t \in C, \ t \in [0,1)$ defined by the equation $z_t = tT(z_t) + (1 - t)z$ is continuous and strongly converges to a fixed point of $T$ as $t \to 1^-$.

Keywords: locally pseudo-contractive mapping, locally nonexpansive mapping, fixed points, reflexivity, uniformly Gateaux differentiable norm

MSC numbers: 47H10