A New Iterative Method for Common Fixed Points of a Finite Family of Nonexpansive Mappings

Let X be a real uniformly convex Banach space and C a closed convex nonempty subset of X. Let {Ti}i=1r be a finite family of nonexpansive self-mappings of C. For a given x1∈C, let {xn} and {xn(i)}, i=1,2,…,r, be sequences defined xn(0)=xn,xn(1)=an1(1)T1xn(0)+(1-an1(1))xn(0),xn(2)=an2...

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Main Authors: Suwicha Imnang, Suthep Suantai
Format: Article
Language:English
Published: Wiley 2009-01-01
Series:International Journal of Mathematics and Mathematical Sciences
Online Access:http://dx.doi.org/10.1155/2009/391839
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author Suwicha Imnang
Suthep Suantai
author_facet Suwicha Imnang
Suthep Suantai
author_sort Suwicha Imnang
collection DOAJ
description Let X be a real uniformly convex Banach space and C a closed convex nonempty subset of X. Let {Ti}i=1r be a finite family of nonexpansive self-mappings of C. For a given x1∈C, let {xn} and {xn(i)}, i=1,2,…,r, be sequences defined xn(0)=xn,xn(1)=an1(1)T1xn(0)+(1-an1(1))xn(0),xn(2)=an2(2)T2xn(1)+an1(2)T1xn+(1-an2(2)-an1(2))xn,…,  xn+1=xn(r)=anr(r)Trxn(r-1)+an(r-1)(r)Tr-1xn(r-2)+⋯+an1(r)T1xn+(1-an(r)(r)-an(r-1)(r)-⋯-an1(r))xn,n≥1, where ani(j)∈[0,1] for all j∈{1,2,…,r}, n∈ℕ and i=1,2,…,j. In this paper, weak and strong convergence theorems of the sequence {xn} to a common fixed point of a finite family of nonexpansive mappings Ti  (i=1,2,…,r) are established under some certain control conditions.
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spelling doaj-art-8f177428b62842e3ade830190a47e97e2025-02-03T05:59:19ZengWileyInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04252009-01-01200910.1155/2009/391839391839A New Iterative Method for Common Fixed Points of a Finite Family of Nonexpansive MappingsSuwicha Imnang0Suthep Suantai1Department of Mathematics, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, ThailandDepartment of Mathematics, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, ThailandLet X be a real uniformly convex Banach space and C a closed convex nonempty subset of X. Let {Ti}i=1r be a finite family of nonexpansive self-mappings of C. For a given x1∈C, let {xn} and {xn(i)}, i=1,2,…,r, be sequences defined xn(0)=xn,xn(1)=an1(1)T1xn(0)+(1-an1(1))xn(0),xn(2)=an2(2)T2xn(1)+an1(2)T1xn+(1-an2(2)-an1(2))xn,…,  xn+1=xn(r)=anr(r)Trxn(r-1)+an(r-1)(r)Tr-1xn(r-2)+⋯+an1(r)T1xn+(1-an(r)(r)-an(r-1)(r)-⋯-an1(r))xn,n≥1, where ani(j)∈[0,1] for all j∈{1,2,…,r}, n∈ℕ and i=1,2,…,j. In this paper, weak and strong convergence theorems of the sequence {xn} to a common fixed point of a finite family of nonexpansive mappings Ti  (i=1,2,…,r) are established under some certain control conditions.http://dx.doi.org/10.1155/2009/391839
spellingShingle Suwicha Imnang
Suthep Suantai
A New Iterative Method for Common Fixed Points of a Finite Family of Nonexpansive Mappings
International Journal of Mathematics and Mathematical Sciences
title A New Iterative Method for Common Fixed Points of a Finite Family of Nonexpansive Mappings
title_full A New Iterative Method for Common Fixed Points of a Finite Family of Nonexpansive Mappings
title_fullStr A New Iterative Method for Common Fixed Points of a Finite Family of Nonexpansive Mappings
title_full_unstemmed A New Iterative Method for Common Fixed Points of a Finite Family of Nonexpansive Mappings
title_short A New Iterative Method for Common Fixed Points of a Finite Family of Nonexpansive Mappings
title_sort new iterative method for common fixed points of a finite family of nonexpansive mappings
url http://dx.doi.org/10.1155/2009/391839
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