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dc.contributor.author | Cerdán Soriano, Juana Mercedes | es_ES |
dc.contributor.author | Faraj El Guelei, Táher | es_ES |
dc.contributor.author | Malla Martínez, Natalia | es_ES |
dc.contributor.author | Marín Mateos-Aparicio, José | es_ES |
dc.contributor.author | Mas Marí, José | es_ES |
dc.date.accessioned | 2018-03-16T05:18:50Z | |
dc.date.available | 2018-03-16T05:18:50Z | |
dc.date.issued | 2010 | es_ES |
dc.identifier.issn | 1068-9613 | es_ES |
dc.identifier.uri | http://hdl.handle.net/10251/99451 | |
dc.description.abstract | [EN] In this paper block approximate inverse preconditioners to solve sparse nonsymmetric linear systems with iterative Krylov subspace methods are studied. The computation of the preconditioners involves consecutive updates of variable rank of an initial and nonsingular matrix A0 and the application of the Sherman-MorrisonWoodbury formula to compute an approximate inverse decomposition of the updated matrices. Therefore, they are generalizations of the preconditioner presented in Bru et al. [SIAM J. Sci. Comput., 25 (2003), pp. 701¿715]. The stability of the preconditioners is studied and it is shown that their computation is breakdown-free for H-matrices. To test the performance the results of numerical experiments obtained for a representative set of matrices are presented. | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | KENT STATE UNIVERSITY, ETNA, DEPT MATHEMATICS & COMPUTER SCIENCE, KENT, USA, OH, 44242-0001 | es_ES |
dc.relation.ispartof | ELECTRONIC TRANSACTIONS ON NUMERICAL ANALYSIS | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Approximate inverse preconditioners | es_ES |
dc.subject | Variable rank updates | es_ES |
dc.subject | Block algorithms | es_ES |
dc.subject | Krylov iterative methods | es_ES |
dc.subject | Sherman-Morrison-Woodbury formula | es_ES |
dc.subject.classification | MATEMATICA APLICADA | es_ES |
dc.title | Block approximate inverse preconditioners for sparse nonsymmetric linear systems | es_ES |
dc.type | Artículo | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Instituto Universitario de Matemática Multidisciplinar - Institut Universitari de Matemàtica Multidisciplinària | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Matemática Aplicada - Departament de Matemàtica Aplicada | es_ES |
dc.description.bibliographicCitation | Cerdán Soriano, JM.; Faraj El Guelei, T.; Malla Martínez, N.; Marín Mateos-Aparicio, J.; Mas Marí, J. (2010). Block approximate inverse preconditioners for sparse nonsymmetric linear systems. ELECTRONIC TRANSACTIONS ON NUMERICAL ANALYSIS. 12(37):23-40. http://hdl.handle.net/10251/99451 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | http://etna.math.kent.edu/ | es_ES |
dc.description.upvformatpinicio | 23 | es_ES |
dc.description.upvformatpfin | 40 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 12 | es_ES |
dc.description.issue | 37 | es_ES |
dc.relation.pasarela | S\40822 | es_ES |