Conditions implying the normality of $\ast$-paranormal operators in the closure of $\mathcal{AN}$-operators

In this article, we first prove the existence of an invariant subspace for a norm-attaining $\ast$-paranormal operator. Then give a representation for $\ast$-paranormal operators in the closure of absolutely norm-attaining operators and further study a few sufficient conditions for the normality of...

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Bibliographic Details
Main Authors Ramesh, G, Sequeira, Shanola S
Format Journal Article
LanguageEnglish
Published 02.02.2023
Subjects
Mathematics - Functional Analysis
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Summary:In this article, we first prove the existence of an invariant subspace for a norm-attaining $\ast$-paranormal operator. Then give a representation for $\ast$-paranormal operators in the closure of absolutely norm-attaining operators and further study a few sufficient conditions for the normality of such operators. Finally, we discuss Toeplitz and Hankel $\ast$-paranormal operators in the closure of absolutely norm-attaining operators on the Hardy space.
DOI:10.48550/arxiv.2302.00896