The Fixed Point Property of a Banach Algebra Generated by an Element with Infinite Spectrum
Joint Authors
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-06-10
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
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.
Let X be an infinite dimensional unital Abelian complex Banach algebra satisfying the following: (i) condition (A) in Fupinwong and Dhompongsa, 2010, (ii) if x,y∈X is such that τx≤τy, for each τ∈Ω(X), then x≤y, and (iii) inf{r(x):x∈X,x=1}>0.
We prove that there exists an element x0 in X such that 〈x0〉R=∑i=1kαix0i:k∈N,αi∈R¯ does not have the fixed point property.
Moreover, as a consequence of the proof, we have that, for each element x0 in X with infinite spectrum and σ(x0)⊂R, the Banach algebra 〈x0〉=∑i=1kαix0i:k∈N,αi∈C¯ generated by x0 does not have the fixed point property.
American Psychological Association (APA)
Thongin, P.& Fupinwong, W.. 2018. The Fixed Point Property of a Banach Algebra Generated by an Element with Infinite Spectrum. Journal of Function Spaces،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1186691
Modern Language Association (MLA)
Thongin, P.& Fupinwong, W.. The Fixed Point Property of a Banach Algebra Generated by an Element with Infinite Spectrum. Journal of Function Spaces No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1186691
American Medical Association (AMA)
Thongin, P.& Fupinwong, W.. The Fixed Point Property of a Banach Algebra Generated by an Element with Infinite Spectrum. Journal of Function Spaces. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1186691
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1186691