Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10071/20172
Registo completo
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Carvalho, L. | - |
dc.contributor.author | Mendes, S. | - |
dc.contributor.author | Diogo, C. | - |
dc.date.accessioned | 2020-03-24T08:32:44Z | - |
dc.date.available | 2020-03-24T08:32:44Z | - |
dc.date.issued | 2019 | - |
dc.identifier.issn | 1076-9803 | - |
dc.identifier.uri | http://hdl.handle.net/10071/20172 | - |
dc.description.abstract | We provide a sufficient condition for the numerical range of a nilpotent matrix N to be circular in terms of the existence of cycles in an undirected graph associated with N. We prove that if we add to this matrix N a diagonal real matrix D, the matrix D+N has convex numerical range. For 3 x 3 nilpotent matrices, we strength further our results and obtain necessary and sufficient conditions for circularity and convexity of the numerical range. | eng |
dc.language.iso | eng | - |
dc.publisher | Electronic Journals Project | - |
dc.relation | PEst-OE/MAT/UI0212/2013 | - |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/147207/PT | - |
dc.rights | openAccess | - |
dc.subject | Quaternions | eng |
dc.subject | Numerical range | eng |
dc.subject | Nilpotent matrix | eng |
dc.title | On the convexity and circularity of the numerical range of nilpotent quaternionic matrices | eng |
dc.type | article | - |
dc.pagination | 1385 - 1404 | - |
dc.peerreviewed | yes | - |
dc.journal | New York Journal of Mathematics | - |
dc.volume | 25 | - |
degois.publication.firstPage | 1385 | - |
degois.publication.lastPage | 1404 | - |
degois.publication.title | On the convexity and circularity of the numerical range of nilpotent quaternionic matrices | eng |
dc.date.updated | 2020-03-24T08:28:52Z | - |
dc.description.version | info:eu-repo/semantics/publishedVersion | - |
dc.subject.fos | Domínio/Área Científica::Ciências Naturais::Matemáticas | por |
iscte.identifier.ciencia | https://ciencia.iscte-iul.pt/id/ci-pub-64430 | - |
iscte.alternateIdentifiers.wos | WOS:000505566900001 | - |
iscte.alternateIdentifiers.scopus | 2-s2.0-85077876871 | - |
Aparece nas coleções: | BRU-RI - Artigos em revistas científicas internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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25-56v.pdf | Versão Editora | 388,5 kB | Adobe PDF | Ver/Abrir |
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