The Atkinson Theorem in Hilbert C*-Modules over C*-Algebras of Compact Operators

The concept of unbounded Fredholm operators on Hilbert C*-modules over an arbitrary C*-algebra is discussed and the Atkinson theorem is generalized for bounded and unbounded Feredholm operators on Hilbert C*-modules over C*-algebras of compact operators. In the framework of Hilbert C*-modules over C...

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Main Authors: A. Niknam, K. Sharifi
Format: Article
Language:English
Published: Wiley 2007-01-01
Series:Abstract and Applied Analysis
Online Access:http://dx.doi.org/10.1155/2007/53060
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author A. Niknam
K. Sharifi
author_facet A. Niknam
K. Sharifi
author_sort A. Niknam
collection DOAJ
description The concept of unbounded Fredholm operators on Hilbert C*-modules over an arbitrary C*-algebra is discussed and the Atkinson theorem is generalized for bounded and unbounded Feredholm operators on Hilbert C*-modules over C*-algebras of compact operators. In the framework of Hilbert C*-modules over C*-algebras of compact operators, the index of an unbounded Fredholm operator and the index of its bounded transform are the same.
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publishDate 2007-01-01
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spelling doaj-art-b2347fbde97042128bcf70e799b629cc2025-08-20T02:23:18ZengWileyAbstract and Applied Analysis1085-33751687-04092007-01-01200710.1155/2007/5306053060The Atkinson Theorem in Hilbert C*-Modules over C*-Algebras of Compact OperatorsA. Niknam0K. Sharifi1Department of Mathematics, Ferdowsi University, Mashhad 91775, IranDepartment of Mathematics, Ferdowsi University, Mashhad 91775, IranThe concept of unbounded Fredholm operators on Hilbert C*-modules over an arbitrary C*-algebra is discussed and the Atkinson theorem is generalized for bounded and unbounded Feredholm operators on Hilbert C*-modules over C*-algebras of compact operators. In the framework of Hilbert C*-modules over C*-algebras of compact operators, the index of an unbounded Fredholm operator and the index of its bounded transform are the same.http://dx.doi.org/10.1155/2007/53060
spellingShingle A. Niknam
K. Sharifi
The Atkinson Theorem in Hilbert C*-Modules over C*-Algebras of Compact Operators
Abstract and Applied Analysis
title The Atkinson Theorem in Hilbert C*-Modules over C*-Algebras of Compact Operators
title_full The Atkinson Theorem in Hilbert C*-Modules over C*-Algebras of Compact Operators
title_fullStr The Atkinson Theorem in Hilbert C*-Modules over C*-Algebras of Compact Operators
title_full_unstemmed The Atkinson Theorem in Hilbert C*-Modules over C*-Algebras of Compact Operators
title_short The Atkinson Theorem in Hilbert C*-Modules over C*-Algebras of Compact Operators
title_sort atkinson theorem in hilbert c modules over c algebras of compact operators
url http://dx.doi.org/10.1155/2007/53060
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