| Título | MATRICES TOTALLY POSITIVE RELATIVE TO A TREE |
|---|---|
| Autores | Johnson, Charles R. , COSTAS SANTOS, ROBERTO SANTIAGO, Tadchiev, Boris |
| Publicación externa | Si |
| Medio | Electron J. Linear Algebra |
| Alcance | Article |
| Naturaleza | Científica |
| Cuartil JCR | 2 |
| Cuartil SJR | 1 |
| Impacto JCR | 0.892 |
| Impacto SJR | 0.981 |
| Web | https://www.scopus.com/inward/record.uri?eid=2-s2.0-65749091058&doi=10.13001%2f1081-3810.1306&partnerID=40&md5=04326a2e75f0d955202c715366e91896 |
| Fecha de publicacion | 01/04/2009 |
| ISI | 000265108300001 |
| Scopus Id | 2-s2.0-65749091058 |
| DOI | 10.13001/1081-3810.1306 |
| Abstract | It is known that for a totally positive (TP) matrix, the eigenvalues are positive and distinct and the eigenvector associated with the smallest eigenvalue is totally nonzero and has an alternating sign pattern. Here, a certain weakening of the TP hypothesis is shown to yield a similar conclusion. |
| Palabras clave | Totally positive matrices; Sylvester's identity; Graph theory; Spectral theory |
| Miembros de la Universidad Loyola |