Some comparative results on eigenvalues, pseudospectra and conditionspectra
type: Item
instance of: scholarly article
title: Some comparative results on eigenvalues, pseudospectra and conditionspectra
zbMATH Open document ID: 1471.15006
published in: The Journal of Analysis
publication date: 2021-08-19T00:00:00Z
review text: Let \(A\) be an \(n\times n\) matrix with complex entries and fix the parameters \(0<\varepsilon <1\) and \(\mu >0\). One can define the spectrum of \(A\), the \(\mu\)-pseudospectrum of \(A\) and the \(\varepsilon\)-condition spectrum. In this paper, the author compares ten results on these three concepts. It is an interesting paper, despite some unconventional choices for the notation.
reviewed by: Rosário Fernandes
Mathematics Subject Classification ID: 15A18
Mathematics Subject Classification ID: 15A60
Mathematics Subject Classification ID: 65F15
Mathematics Subject Classification ID: 65F35
zbMATH DE Number: 7383695
zbMATH Keywords: eigenvalues
zbMATH Keywords: spectrum
zbMATH Keywords: pseudo-spectrum
zbMATH Keywords: condition spectrum
author: Daniel Sukumar
MaRDI profile type: Publication
full work available at URL: s41478-019-00201-4
OpenAlex ID: W2973783531
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DOI: 10.1007/S41478-019-00201-4
description: scientific article; zbMATH DE number 7383695