Publication: A comparison of eigenvalue condition numbers for matrix polynomials
dc.affiliation.dpto | UC3M. Departamento de Matemáticas | es |
dc.affiliation.grupoinv | UC3M. Grupo de Investigación: Matemática Aplicada a Control, Sistemas y Señales | es |
dc.contributor.author | Anguas Márquez, Luis Miguel | |
dc.contributor.author | Bueno Cachadiña, María Isabel | |
dc.contributor.author | Martínez Dopico, Froilán César | |
dc.contributor.funder | Ministerio de Economía y Competitividad (España) | es |
dc.date.accessioned | 2021-04-06T09:38:46Z | |
dc.date.available | 2021-04-06T09:38:46Z | |
dc.date.issued | 2019-03-01 | |
dc.description.abstract | In this paper, we consider the different condition numbers for simple eigenvalues of matrix polynomials used in the literature and we compare them. One of these condition numbers is a generalization of the Wilkinson condition number for the standard eigenvalue problem. This number has the disadvantage of only being defined for finite eigenvalues. In order to give a unified approach to all the eigenvalues of a matrix polynomial, both finite and infinite, two (homogeneous) condition numbers have been defined in the literature. In their definition, very different approaches are used. One of the main goals of this note is to show that, when the matrix polynomial has a moderate degree, both homogeneous condition numbers are essentially the same and one of them provides a geometric interpretation of the other. We also show how the homogeneous condition numbers compare with the "Wilkinson-like" eigenvalue condition number and how they extend this condition number to zero and infinite eigenvalues. . | en |
dc.format.extent | 31 | |
dc.identifier.bibliographicCitation | Anguas, L. M., Bueno, M. I. & Dopico, F. M. (2019). A comparison of eigenvalue condition numbers for matrix polynomials. Linear Algebra and Its Applications, 564, pp. 170–200. | en |
dc.identifier.doi | https://doi.org/10.1016/j.laa.2018.11.031 | |
dc.identifier.issn | 0024-3795 | |
dc.identifier.publicationfirstpage | 170 | |
dc.identifier.publicationlastpage | 200 | |
dc.identifier.publicationtitle | Linear Algebra and Its Applications | en |
dc.identifier.publicationvolume | 564 | |
dc.identifier.uri | https://hdl.handle.net/10016/32269 | |
dc.identifier.uxxi | AR/0000023050 | |
dc.language.iso | eng | en |
dc.publisher | Elsevier | en |
dc.relation.projectID | Gobierno de España. MTM2015-65798-P | es |
dc.relation.projectID | Gobierno de España. MTM2017-90682-REDT | es |
dc.relation.projectID | Gobierno de España. BES-2013-065688 | es |
dc.rights | © 2018 Elsevier Inc. | en |
dc.rights | Atribución-NoComercial-SinDerivadas 3.0 España | * |
dc.rights.accessRights | open access | en |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.subject.eciencia | Matemáticas | es |
dc.subject.other | Eigenvalue condition number | en |
dc.subject.other | Matrix polynomial | en |
dc.subject.other | Chordal distance | en |
dc.subject.other | Eigenvalue | en |
dc.title | A comparison of eigenvalue condition numbers for matrix polynomials | en |
dc.type | research article | * |
dc.type.hasVersion | AM | * |
dspace.entity.type | Publication |
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