On star-dagger matrices and the core-EP decomposition
- Autores
- Ferreyra, David Eduardo; Levis, Fabián Eduardo; Malik, Saroj B.; Priori, Albina Natalia
- Año de publicación
- 2024
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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.
Fil: Ferreyra, David Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Físico-Químicas y Naturales. Departamento de Matemática; Argentina
Fil: Levis, Fabián Eduardo. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Físico-Químicas y Naturales. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Malik, Saroj B.. Ambedkar University; India
Fil: Priori, Albina Natalia. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Físico-Químicas y Naturales. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina - Materia
-
BI-DAGGER
BI-EP
BI-NORMAL
EP MATRIX
PARTIAL ISOMETRY
STAR-DAGGER MATRIX - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/221298
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On star-dagger matrices and the core-EP decompositionFerreyra, David EduardoLevis, Fabián EduardoMalik, Saroj B.Priori, Albina NataliaBI-DAGGERBI-EPBI-NORMALEP MATRIXPARTIAL ISOMETRYSTAR-DAGGER MATRIXhttps://purl.org/becyt/ford/1.1https://purl.org/becyt/ford/1The 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.Fil: Ferreyra, David Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Físico-Químicas y Naturales. Departamento de Matemática; ArgentinaFil: Levis, Fabián Eduardo. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Físico-Químicas y Naturales. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Malik, Saroj B.. Ambedkar University; IndiaFil: Priori, Albina Natalia. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Físico-Químicas y Naturales. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaElsevier Science2024-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/221298Ferreyra, 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; 1-180377-04271879-1778CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0377042723005022info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cam.2023.115558info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:47:33Zoai:ri.conicet.gov.ar:11336/221298instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:47:34.038CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
On star-dagger matrices and the core-EP decomposition |
title |
On star-dagger matrices and the core-EP decomposition |
spellingShingle |
On star-dagger matrices and the core-EP decomposition Ferreyra, David Eduardo BI-DAGGER BI-EP BI-NORMAL EP MATRIX PARTIAL ISOMETRY STAR-DAGGER MATRIX |
title_short |
On star-dagger matrices and the core-EP decomposition |
title_full |
On star-dagger matrices and the core-EP decomposition |
title_fullStr |
On star-dagger matrices and the core-EP decomposition |
title_full_unstemmed |
On star-dagger matrices and the core-EP decomposition |
title_sort |
On star-dagger matrices and the core-EP decomposition |
dc.creator.none.fl_str_mv |
Ferreyra, David Eduardo Levis, Fabián Eduardo Malik, Saroj B. Priori, Albina Natalia |
author |
Ferreyra, David Eduardo |
author_facet |
Ferreyra, David Eduardo Levis, Fabián Eduardo Malik, Saroj B. Priori, Albina Natalia |
author_role |
author |
author2 |
Levis, Fabián Eduardo Malik, Saroj B. Priori, Albina Natalia |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
BI-DAGGER BI-EP BI-NORMAL EP MATRIX PARTIAL ISOMETRY STAR-DAGGER MATRIX |
topic |
BI-DAGGER BI-EP BI-NORMAL EP MATRIX PARTIAL ISOMETRY STAR-DAGGER MATRIX |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.1 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
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. Fil: Ferreyra, David Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Físico-Químicas y Naturales. Departamento de Matemática; Argentina Fil: Levis, Fabián Eduardo. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Físico-Químicas y Naturales. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina Fil: Malik, Saroj B.. Ambedkar University; India Fil: Priori, Albina Natalia. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Físico-Químicas y Naturales. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina |
description |
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. |
publishDate |
2024 |
dc.date.none.fl_str_mv |
2024-03-01 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/221298 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 0377-0427 1879-1778 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/221298 |
identifier_str_mv |
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 0377-0427 1879-1778 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0377042723005022 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cam.2023.115558 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science |
publisher.none.fl_str_mv |
Elsevier Science |
dc.source.none.fl_str_mv |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.22299 |