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Showing results 1 to 20 of 23.  next >
Issue DateTitleAuthor(s)TypeAccess
1-Aug-2001About the von Neumann regularity of triangular block matricesPatrício, Pedro; Puystjens, RolandArticleOpen access
15-May-2005Diagonalizing triangular matrices via orthogonal Pierce decompositionsHartwig, Robert E.; Patrício, Pedro; Puystjens, RolandArticleOpen access
15-May-2005The doubly negative matrix completion problemAraújo, C. Mendes; Torregrosa, Juan R.; Urbano, Ana M.ArticleOpen access
2004Drazin-Moore-Penrose invertibility in ringsPatrício, Pedro; Puystjens, RolandArticleOpen access
2015Eigenvectors of isospectral graph transformationsDuarte, P.; Torres, M. J.ArticleRestricted access (UMinho)
15-Jan-2004Generalized invertibility in two semigroups of a ringPatrício, Pedro; Puystjens, RolandArticleOpen access
2003The Moore-Penrose inverse of a factorizationPatrício, PedroArticleOpen access
1-Aug-2001The Moore-Penrose inverse of von Neumann regular matrices over a ringPatrício, PedroArticleOpen access
2018Multiplicity lists for symmetric matrices whose graphs have few missing edgesJohnson, Charles R.; Zhang, YulinArticleOpen access
1-Oct-2003N-matrix completion problemAraújo, C. Mendes; Torregrosa, Juan R.; Urbano, Ana M.ArticleOpen access
15-Mar-2004The N-matrix completion problem under digraphs assumptionsAraújo, C. Mendes; Torregrosa, Juan R.; Urbano, Ana M.ArticleOpen access
Oct-2019On a class of nonsingular matrices containing B-matricesAraújo, C. Mendes; Gonçalves, Suzana MendesArticleOpen access
2015On mappings preserving the sharp and star ordersBurgos, M.; Márquez-García, A. C.; Patrício, PedroArticleOpen access
2005On the number of invariant factors of matrix productsSá, E. Marques de; Zhang Yu LinArticleOpen access
2009Sign pattern matrices that admit M-, N-, P- or inverse M-matricesAraújo, C. Mendes; Torregrosa, Juan R.ArticleOpen access
Oct-2011Sign pattern matrices that admit P_0-matricesAraújo, C. Mendes; Torregrosa, Juan R.ArticleOpen access
2014Some results on B-matrices and doubly B-matricesAraújo, C. Mendes; Torregrosa, Juan R.ArticleOpen access
1-Sep-2005The symmetric N-matrix completion problemAraújo, C. Mendes; Torregrosa, Juan R.; Urbano, Ana M.ArticleOpen access
2012The (2,2,0) drazin inverse problemPatrício, Pedro; Hartwig, Robert E.ArticleOpen access
2012The Moore-Penrose inverse of a companion matrixPatrício, PedroArticleOpen access