Diagonals and eigenvalues of sums of hermitian matrices. Extreme cases

dc.creator	Miranda, Héctor	es
dc.date	2017-04-24
dc.date.accessioned	2025-10-06T15:05:08Z
dc.date.available	2025-10-06T15:05:08Z
dc.identifier	https://www.revistaproyecciones.cl/index.php/proyecciones/article/view/1487
dc.identifier	10.4067/S0716-09172003000200003
dc.identifier.uri	https://revistaschilenas.uchile.cl/handle/2250/255583
dc.description	There are well known inequalities for Hermitian matrices A and B that relate the diagonal entries of A+B to the eigenvalues of A and B. These inequalities are easily extended to more general inequalities in the case where the matrices A and B are perturbed through congruences of the form UAU? + V BV ? , where U and V are arbitrary unitary matrices, or to sums of more than two matrices. The extremal cases where these inequalities and some generalizations become equalities are examined here.	es
dc.format	application/pdf
dc.language	spa
dc.publisher	Universidad Católica del Norte.	en
dc.relation	https://www.revistaproyecciones.cl/index.php/proyecciones/article/view/1487/1266
dc.rights	Copyright (c) 2003 Proyecciones. Journal of Mathematics	en
dc.source	Proyecciones (Antofagasta); Vol. 22 No. 2 (2003); 127-134	en
dc.source	Proyecciones. Revista de Matemática; Vol. 22 Núm. 2 (2003); 127-134	es
dc.source	0717-6279
dc.source	10.22199/issn.0717-6279-2003
dc.title	Diagonals and eigenvalues of sums of hermitian matrices. Extreme cases	es
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion