Pseudospectra of the direct sum of linear operators in ultrametric Banach spaces

Pseudospectra of the direct sum of linear operators in ultrametric Banach spaces

In this paper, a characterization of essential pseudospectra of bounded linear operators on ultrametric Banach spaces over a spherically complete field was given and the notions of pseudospectra and condition pseudospectra of the direct sum of linear operators on ultrametric Banach spaces were intr...

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Bibliographic Details
Main Author: J. Ettayb
Format: Article
Language:English
Published: Academician Ye.A. Buketov Karaganda University 2024-12-01
Series:Қарағанды университетінің хабаршысы. Математика сериясы
Subjects:
Ultrametric Banach spaces
pseudospectrum
condition pseudospectrum
direct sum of operators
linear operator pencils
Online Access:https://mathematics-vestnik.ksu.kz/index.php/mathematics-vestnik/article/view/886
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https://mathematics-vestnik.ksu.kz/index.php/mathematics-vestnik/article/view/886

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