Nonexpansive mappings on Abelian Banach algebras and their fixed points

A Banach space X is said to have the fixed point property if for each nonexpansive mapping T : E → E on a bounded closed convex subset E of X has a fixed point. We show that each infinite dimensional Abelian complex Banach algebra X satisfying: (i) property (A) defined in (Fupinwong and Dhompongsa i...

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Main Author: Fupinwong W.
Format: Journal
Published: 2017
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84902528913&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/42911
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-429112017-09-28T06:42:30Z Nonexpansive mappings on Abelian Banach algebras and their fixed points Fupinwong W. A Banach space X is said to have the fixed point property if for each nonexpansive mapping T : E → E on a bounded closed convex subset E of X has a fixed point. We show that each infinite dimensional Abelian complex Banach algebra X satisfying: (i) property (A) defined in (Fupinwong and Dhompongsa in Fixed Point Theory Appl. 2010:Article ID 34959, 2010), (ii) ||x|| ≤ ||y|| for each x, y ∈ X such that |τ(x)| ≤ |τ(y)| for each τ ∈ Ω(X), (iii) inf{r(x) : x ∈ X, ||x|| = 1} > 0 does not have the fixed point property. This result is a generalization of Theorem 4.3 in (Fupinwong and Dhompongsa in Fixed Point Theory Appl. 2010:Article ID 34959, 2010). © 2012 Fupinwong; licensee Springer. 2017-09-28T06:42:30Z 2017-09-28T06:42:30Z 2012-01-01 Journal 16871820 2-s2.0-84902528913 10.1186/1687-1812-2012-150 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84902528913&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/42911
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description A Banach space X is said to have the fixed point property if for each nonexpansive mapping T : E → E on a bounded closed convex subset E of X has a fixed point. We show that each infinite dimensional Abelian complex Banach algebra X satisfying: (i) property (A) defined in (Fupinwong and Dhompongsa in Fixed Point Theory Appl. 2010:Article ID 34959, 2010), (ii) ||x|| ≤ ||y|| for each x, y ∈ X such that |τ(x)| ≤ |τ(y)| for each τ ∈ Ω(X), (iii) inf{r(x) : x ∈ X, ||x|| = 1} > 0 does not have the fixed point property. This result is a generalization of Theorem 4.3 in (Fupinwong and Dhompongsa in Fixed Point Theory Appl. 2010:Article ID 34959, 2010). © 2012 Fupinwong; licensee Springer.
format Journal
author Fupinwong W.
spellingShingle Fupinwong W.
Nonexpansive mappings on Abelian Banach algebras and their fixed points
author_facet Fupinwong W.
author_sort Fupinwong W.
title Nonexpansive mappings on Abelian Banach algebras and their fixed points
title_short Nonexpansive mappings on Abelian Banach algebras and their fixed points
title_full Nonexpansive mappings on Abelian Banach algebras and their fixed points
title_fullStr Nonexpansive mappings on Abelian Banach algebras and their fixed points
title_full_unstemmed Nonexpansive mappings on Abelian Banach algebras and their fixed points
title_sort nonexpansive mappings on abelian banach algebras and their fixed points
publishDate 2017
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84902528913&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/42911
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