doi:10.3390/axioms12080774engDelgado, JorgePeña, GuillermoPeña, Juan ManuelGreen Matrices, Minors and Hadamard ProductsART-2023-134769Green 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.2023http://zaguan.unizar.es/record/12765710.3390/axioms12080774http://zaguan.unizar.es/record/127657oai:zaguan.unizar.es:127657info:eu-repo/grantAgreement/ES/DGA/E41-23Rinfo:eu-repo/grantAgreement/ES/MCIU-AEI/PGC2018-096321-B-I00info:eu-repo/grantAgreement/ES/MICINN/RED2022-134176-TAxioms 12, 8 (2023), 774 [16 pp.]byhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccess