Applications of Bregman-Opial Property to Bregman Nonspreading Mappings in Banach Spaces

The Opial property of Hilbert spaces and some other special Banach spaces is a powerful tool in establishing fixed point theorems for nonexpansive and, more generally, nonspreading mappings. Unfortunately, not every Banach space shares the Opial property. However, every Banach space has a similar B...

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Main Authors: Eskandar Naraghirad, Ngai-Ching Wong, Jen-Chih Yao
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Abstract and Applied Analysis
Online Access:http://dx.doi.org/10.1155/2014/272867
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author Eskandar Naraghirad
Ngai-Ching Wong
Jen-Chih Yao
author_facet Eskandar Naraghirad
Ngai-Ching Wong
Jen-Chih Yao
author_sort Eskandar Naraghirad
collection DOAJ
description The Opial property of Hilbert spaces and some other special Banach spaces is a powerful tool in establishing fixed point theorems for nonexpansive and, more generally, nonspreading mappings. Unfortunately, not every Banach space shares the Opial property. However, every Banach space has a similar Bregman-Opial property for Bregman distances. In this paper, using Bregman distances, we introduce the classes of Bregman nonspreading mappings and investigate the Mann and Ishikawa iterations for these mappings. We establish weak and strong convergence theorems for Bregman nonspreading mappings.
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publishDate 2014-01-01
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series Abstract and Applied Analysis
spelling doaj-art-3da31a7d1ab940b39fbec099b2a1a0cd2025-08-20T02:07:49ZengWileyAbstract and Applied Analysis1085-33751687-04092014-01-01201410.1155/2014/272867272867Applications of Bregman-Opial Property to Bregman Nonspreading Mappings in Banach SpacesEskandar Naraghirad0Ngai-Ching Wong1Jen-Chih Yao2Department of Mathematics, Yasouj University, Yasouj 75918, IranDepartment of Applied Mathematics, National Sun Yat-sen University, Kaohsiung 804, TaiwanCenter for General Education, Kaohsiung Medical University, Kaohsiung 807, TaiwanThe Opial property of Hilbert spaces and some other special Banach spaces is a powerful tool in establishing fixed point theorems for nonexpansive and, more generally, nonspreading mappings. Unfortunately, not every Banach space shares the Opial property. However, every Banach space has a similar Bregman-Opial property for Bregman distances. In this paper, using Bregman distances, we introduce the classes of Bregman nonspreading mappings and investigate the Mann and Ishikawa iterations for these mappings. We establish weak and strong convergence theorems for Bregman nonspreading mappings.http://dx.doi.org/10.1155/2014/272867
spellingShingle Eskandar Naraghirad
Ngai-Ching Wong
Jen-Chih Yao
Applications of Bregman-Opial Property to Bregman Nonspreading Mappings in Banach Spaces
Abstract and Applied Analysis
title Applications of Bregman-Opial Property to Bregman Nonspreading Mappings in Banach Spaces
title_full Applications of Bregman-Opial Property to Bregman Nonspreading Mappings in Banach Spaces
title_fullStr Applications of Bregman-Opial Property to Bregman Nonspreading Mappings in Banach Spaces
title_full_unstemmed Applications of Bregman-Opial Property to Bregman Nonspreading Mappings in Banach Spaces
title_short Applications of Bregman-Opial Property to Bregman Nonspreading Mappings in Banach Spaces
title_sort applications of bregman opial property to bregman nonspreading mappings in banach spaces
url http://dx.doi.org/10.1155/2014/272867
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AT ngaichingwong applicationsofbregmanopialpropertytobregmannonspreadingmappingsinbanachspaces
AT jenchihyao applicationsofbregmanopialpropertytobregmannonspreadingmappingsinbanachspaces