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Condition pseudospectral radius of bounded linear operators
G. Krishna Kumar,
Published in Taylor and Francis Ltd.
2020
Volume: 70
   
Issue: 1
Pages: 27 - 41
Abstract
In this article, we consider the condition pseudospectrum of bounded linear operators on a Banach space. The condition pseudospectrum of normal matrices and Jordan blocks are characterized and condition pseudospectral radius of the classes are found. Sub-additivity and sub-multiplicativity of the condition pseudospectral radius for commuting pairs of bounded linear operators are proved. It is shown that the condition pseudospectral radius becomes a complete algebra norm in a commutative complex unital Banach algebra. Certain examples are given to illustrate the results. The results developed are also extended to a general setting. © 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group.
About the journal
JournalData powered by TypesetLinear and Multilinear Algebra
PublisherData powered by TypesetTaylor and Francis Ltd.
ISSN03081087
Open AccessNo