Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/1471
Registo completo
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Araújo, C. Mendes | - |
dc.contributor.author | Torregrosa, Juan R. | - |
dc.contributor.author | Urbano, Ana M. | - |
dc.date.accessioned | 2005-05-06T13:53:47Z | - |
dc.date.available | 2005-05-06T13:53:47Z | - |
dc.date.issued | 2003-10-01 | - |
dc.identifier.citation | "Linear algebra and its applications". ISSN 0024-3795. 372 (2003) 111-125. | eng |
dc.identifier.issn | 0024-3795 | por |
dc.identifier.uri | https://hdl.handle.net/1822/1471 | - |
dc.description.abstract | An n x n matrix is called an N-matrix if all principal minors are negative. In this paper, we are interested in N-matrix completion problems, that is, when a partial N-matrix hás an N-matrix completion. In general, a combinatorially or non-combinatorially symmetric partial N-matrix does not have an N-matrix completion. Here we prove that a combinatorially symmetric partial N-matrix has an N-matrix completion if the graph of its specified entries is a 1-chordal graph. We also prove that there exists an N-matrix completion for a partial N-matrix whose associated graph is an undirected cycle. | eng |
dc.description.sponsorship | Fundação para a Ciência e a Tecnologia (FCT) – Programa Operacional “Ciência, Tecnologia, Inovação” (POCTI). | por |
dc.language.iso | eng | eng |
dc.publisher | Elsevier | eng |
dc.rights | openAccess | eng |
dc.subject | Partial Matrix | eng |
dc.subject | Matrix completion problem | eng |
dc.subject | N-matrix | eng |
dc.subject | Undirected graphs | eng |
dc.subject | completion problem | por |
dc.subject | undirected graph | por |
dc.title | N-matrix completion problem | eng |
dc.type | article | eng |
dc.peerreviewed | yes | eng |
oaire.citationStartPage | 111 | por |
oaire.citationEndPage | 125 | por |
oaire.citationVolume | 372 | por |
dc.identifier.doi | 10.1016/S0024-3795(03)00500-7 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Linear Algebra and Its Applications | por |
Aparece nas coleções: | CMAT - Artigos em revistas com arbitragem / Papers in peer review journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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NmatC[1].pdf | 200,35 kB | Adobe PDF | Ver/Abrir |