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https://hdl.handle.net/1822/5741| Título: | Totally nonpositive completions on partial matrices |
| Autor(es): | Araújo, C. Mendes Torregrosa, Juan R. Urbano, Ana M. |
| Palavras-chave: | Partial matrix Totally nonpositive matrix Graph Completion problems completion problem undirected graphs |
| Data: | Mar-2006 |
| Editora: | Elsevier |
| Revista: | Linear Algebra and its Applications |
| Citação: | "Linear Algebra and its Applications". ISSN 0024-3795. 413:2-3 (Mar. 2006) 403-424. |
| Resumo(s): | An n £ n real matrix is said to be totally no positive if every minor is no positive. In this paper, we are interested in totally no positive completion problems, that is, does A partial totally no positive matrix have a totally no positive matrix completion? This Problem has, in general, a negative answer. Therefore, we analyze the question: for which Labelled graphs G does every partial totally no positive matrix, whose associated graph is G, have a totally no positive completion? Here we study the mentioned problem when G Is a choral graph or an undirected cycle. |
| Tipo: | Artigo |
| URI: | https://hdl.handle.net/1822/5741 |
| DOI: | 10.1016/j.laa.2005.05.013 |
| ISSN: | 0024-3795 |
| Versão da editora: | www.sciencedirect.com |
| Arbitragem científica: | yes |
| Acesso: | Acesso aberto |
| Aparece nas coleções: |
Ficheiros deste registo:
| Ficheiro | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| tnpLAA2.pdf | 182,27 kB | Adobe PDF | Ver/Abrir |
