Artículo

On star-dagger matrices and the core-EP decomposition

Ferreyra, David EduardoIcon ; Levis, Fabián EduardoIcon ; Malik, Saroj B.; Priori, Albina NataliaIcon
Fecha de publicación: 01/03/2024
Editorial: Elsevier Science
Revista: Journal Of Computational And Applied Mathematics
ISSN: 0377-0427
e-ISSN: 1879-1778
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:

Resumen

The concept of star-dagger matrices was introduced in 1984 by Hartwig and Spindelböck. While they completely characterized the star-dagger matrices by using a block decomposition of the form PQ00, they also proposed the following open problem: “Can the triangular form PQ0Rbe used to obtain further results on the star-dagger matrices?” In this paper, we have attempted this open problem by using an upper-triangularization of Schur's type for a square matrix, namely, the core-EP decomposition. Furthermore, similar problems regarding bi-dagger and bi-EP matrices are investigated.
Palabras clave: BI-DAGGER , BI-EP , BI-NORMAL , EP MATRIX , PARTIAL ISOMETRY , STAR-DAGGER MATRIX
 
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/221298
URL: https://linkinghub.elsevier.com/retrieve/pii/S0377042723005022
DOI: http://dx.doi.org/10.1016/j.cam.2023.115558
Colecciones
Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Citación
Ferreyra, David Eduardo; Levis, Fabián Eduardo; Malik, Saroj B.; Priori, Albina Natalia; On star-dagger matrices and the core-EP decomposition; Elsevier Science; Journal Of Computational And Applied Mathematics; 438; 1-3-2024; 1-18
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