Chiang Mai Journal of Science

Print ISSN: 0125-2526 | eISSN : 2465-3845

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On Common Fixed Points of Two Non-self Nonexpansive Mappings in Banach Spaces

Hukmi Kiziltun, Murat zdemir and Sezgin Akbulut
* Author for corresponding; e-mail address: hukmu@atauni.edu.tr
Volume: Vol.34 No.3 (SEPTEMBER 2007)
Research Article
DOI:
Received: 25 April 2007, Revised: -, Accepted: 30 September 2007, Published: -

Citation: Kiziltun H., Zdemir M. and Akbulut S., On Common Fixed Points of Two Non-self Nonexpansive Mappings in Banach Spaces, Chiang Mai Journal of Science, 2007; 34(3): 281-288.

Abstract

Suppose that  K  is a nonempty closed convex subset of  a real uniformly convex Banach space E with P as a nonexpansive retraction. Let T , S : K → E  be two nonexpansive non-self maps, with F(T) ∩ F(S) :={x ∈K : Sx =Tx= x}  ≠∅  . Suppose {Xn} is generated iteratively by  Xn+1 = P((1-αnSP[(1-βn)X+ βnTxn]),X1 ∈ K ,  n ≥ 1, where {αn} and {βn} are real sequences in [ε, 1-ε ]  for some ε ∈(0,1) . It is proved that (a) If   the dual E* of   E has the Kadec-Klee property, then {Xn} weak convergesto some x* ∈ F(T) ∩ F(S). (b) If  T and  S satisfies condition (A), then {Xn} strong converges to some X* ∈ F(T) ∩ F(S)

Keywords: Nonexpansive non-self maps, Common fixed point

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