127657 20241125101143.0 doi 10.3390/axioms12080774 sideral 134769 ART-2023-134769 eng Delgado, Jorge Universidad de Zaragoza (orcid)0000-0003-2156-9856 Green Matrices, Minors and Hadamard Products 2023 Access copy available to the general public Unrestricted Green matrices are interpreted as discrete version of Green functions and are used when working with inhomogeneous linear system of differential equations. This paper discusses accurate algebraic computations using a recent procedure to achieve an important factorization of these matrices with high relative accuracy and using alternative accurate methods. An algorithm to compute any minor of a Green matrix with high relative accuracy is also presented. The bidiagonal decomposition of the Hadamard product of Green matrices is obtained. Illustrative numerical examples are included. info:eu-repo/grantAgreement/ES/DGA/E41-23R info:eu-repo/grantAgreement/ES/MCIU-AEI/PGC2018-096321-B-I00 info:eu-repo/grantAgreement/ES/MICINN/RED2022-134176-T info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 1.9 2023 MATHEMATICS, APPLIED 66 / 332 = 0.199 2023 Q1 T1 0.0 2023 Algebra and Number Theory 2023 Analysis 2023 Mathematical Physics 2023 Logic 2023 Geometry and Topology 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peña, Guillermo Universidad de Zaragoza (orcid)0000-0002-8816-5816 Peña, Juan Manuel Universidad de Zaragoza (orcid)0000-0002-1340-0666 2005 595 Universidad de Zaragoza Dpto. Matemática Aplicada Área Matemática Aplicada 4000 415 Universidad de Zaragoza Dpto. Análisis Económico Área Fund. Análisis Económico 12, 8 (2023), 774 [16 pp.] Axioms Axioms 2075-1680 633051 http://zaguan.unizar.es/record/127657/files/texto_completo.pdf Versión publicada 2391288 http://zaguan.unizar.es/record/127657/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:127657 articulos driver 2024-11-22-12:03:31 ARTICLE