Spectral analysis of operator matrices: limit point insights

This paper explores the potential of local spectral theory to investigate the limit point set of the descent spectrum of upper triangular operator matrices, denoted by T , on Banach spaces. We rigorously prove that transitioning from the accumulation set of the diagonal descent spectrum, denoted by...

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Bibliographic Details
Published in:	Annali dell'Università di Ferrara. Sezione 7. Scienze matematiche Vol. 71; no. 1; p. 16
Main Author:	Bahloul, Aymen
Format:	Journal Article
Language:	English
Published:	Milan Springer Milan 01.03.2025 Springer Nature B.V
Subjects:	Algebraic Geometry Analysis Banach spaces Geometry History of Mathematical Sciences Investigations Mathematics Mathematics and Statistics Numerical Analysis Operators (mathematics) Spectral theory Spectrum analysis 47A08 Upper triangular operator matrices Limit points Descent spectrum 47A11 Local spectral theory Banach spaces 47A10
ISSN:	0430-3202, 1827-1510
Online Access:	Get full text
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