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Proceedings of the American Mathematical Society

ISSN 1088-6826(online) ISSN 0002-9939(print)

 

 

Extension problem to an invertible matrix


Author: Vadim Tolokonnikov
Journal: Proc. Amer. Math. Soc. 117 (1993), 1023-1030
MSC: Primary 46J15; Secondary 30H05, 47A57, 47D99
DOI: https://doi.org/10.1090/S0002-9939-1993-1123668-X
MathSciNet review: 1123668
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Abstract: The extension problem for rectangular matrices with values in Banach algebra to an invertible square matrix is investigated. For this problem to be solvable for a matrix $ D$, the following condition is necessary: for every maximal ideal $ m$ of the algebra, the numerical matrix $ D(m)$ must have maximal rank. This condition is sufficient for many algebras, for example, for the algebras $ {H^\infty }(R)$ of bounded analytic functions in a plane finitely connected domain $ R$ and to Sarason subalgebras in the algebra $ {H^\infty }$.


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Additional Information

DOI: https://doi.org/10.1090/S0002-9939-1993-1123668-X
Keywords: Banach algebras, subalgebras of $ {H^\infty }$, matrices, projective modules, vector bundles
Article copyright: © Copyright 1993 American Mathematical Society