Quasimultipliers on 𝐹-Algebras

We investigate the extent to which the study of quasimultipliers can be made beyond Banach algebras. We will focus mainly on the class of 𝐹-algebras, in particular on complete 𝑘-normed algebras, 0<𝑘≤1, not necessarily locally convex. We include a few counterexamples to demonstrate that some of ou...

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Main Authors: Marjan Adib, Abdolhamid Riazi, Liaqat Ali Khan
Format: Article
Language:English
Published: Wiley 2011-01-01
Series:Abstract and Applied Analysis
Online Access:http://dx.doi.org/10.1155/2011/235273
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author Marjan Adib
Abdolhamid Riazi
Liaqat Ali Khan
author_facet Marjan Adib
Abdolhamid Riazi
Liaqat Ali Khan
author_sort Marjan Adib
collection DOAJ
description We investigate the extent to which the study of quasimultipliers can be made beyond Banach algebras. We will focus mainly on the class of 𝐹-algebras, in particular on complete 𝑘-normed algebras, 0<𝑘≤1, not necessarily locally convex. We include a few counterexamples to demonstrate that some of our results do not carry over to general 𝐹-algebras. The bilinearity and joint continuity of quasimultipliers on an 𝐹-algebra 𝐴 are obtained under the assumption of strong factorability. Further, we establish several properties of the strict and quasistrict topologies on the algebra 𝑄𝑀(𝐴) of quasimultipliers of a complete 𝑘-normed algebra 𝐴 having a minimal ultra-approximate identity.
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spelling doaj-art-706f2fdd9bde4b0c865b17c3347a8b912025-02-03T01:21:18ZengWileyAbstract and Applied Analysis1085-33751687-04092011-01-01201110.1155/2011/235273235273Quasimultipliers on 𝐹-AlgebrasMarjan Adib0Abdolhamid Riazi1Liaqat Ali Khan2Department of Mathematics, Payamenoor University-Aligodarz Branch, Aligodarz, IranDepartment of Mathematics and Computer Science, Amirkabir University of Technology, P.O. Box 15914, Tehran, IranDepartment of Mathematics, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi ArabiaWe investigate the extent to which the study of quasimultipliers can be made beyond Banach algebras. We will focus mainly on the class of 𝐹-algebras, in particular on complete 𝑘-normed algebras, 0<𝑘≤1, not necessarily locally convex. We include a few counterexamples to demonstrate that some of our results do not carry over to general 𝐹-algebras. The bilinearity and joint continuity of quasimultipliers on an 𝐹-algebra 𝐴 are obtained under the assumption of strong factorability. Further, we establish several properties of the strict and quasistrict topologies on the algebra 𝑄𝑀(𝐴) of quasimultipliers of a complete 𝑘-normed algebra 𝐴 having a minimal ultra-approximate identity.http://dx.doi.org/10.1155/2011/235273
spellingShingle Marjan Adib
Abdolhamid Riazi
Liaqat Ali Khan
Quasimultipliers on 𝐹-Algebras
Abstract and Applied Analysis
title Quasimultipliers on 𝐹-Algebras
title_full Quasimultipliers on 𝐹-Algebras
title_fullStr Quasimultipliers on 𝐹-Algebras
title_full_unstemmed Quasimultipliers on 𝐹-Algebras
title_short Quasimultipliers on 𝐹-Algebras
title_sort quasimultipliers on 𝐹 algebras
url http://dx.doi.org/10.1155/2011/235273
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AT abdolhamidriazi quasimultipliersonfalgebras
AT liaqatalikhan quasimultipliersonfalgebras