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dc.contributor.author | Bader, Philipp | es_ES |
dc.contributor.author | Blanes Zamora, Sergio | es_ES |
dc.contributor.author | Seydaoglu, Muaz | es_ES |
dc.date.accessioned | 2018-03-28T13:47:06Z | |
dc.date.available | 2018-03-28T13:47:06Z | |
dc.date.issued | 2015 | es_ES |
dc.identifier.issn | 0895-4798 | es_ES |
dc.identifier.uri | http://hdl.handle.net/10251/99868 | |
dc.description.abstract | [EN] We propose splitting methods for the computation of the exponential of perturbed matrices which can be written as the sum A = D+epsilon B of a sparse and efficiently exponentiable matrix D with sparse exponential e(D) and a dense matrix epsilon B which is of small norm in comparison with D. The predominant algorithm is based on scaling the large matrix A by a small number 2(-s), which is then exponentiated by efficient Pade or Taylor methods and finally squared in order to obtain an approximation for the full exponential. In this setting, the main portion of the computational cost arises from dense-matrix multiplications and we present a modified squaring which takes advantage of the smallness of the perturbed matrix B in order to reduce the number of squarings necessary. Theoretical results on local error and error propagation for splitting methods are complemented with numerical experiments and show a clear improvement over existing methods when medium precision is sought. | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Society for Industrial and Applied Mathematics | es_ES |
dc.relation.ispartof | SIAM Journal on Matrix Analysis and Applications | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Matrix exponential | es_ES |
dc.subject | Scaling and squaring method | es_ES |
dc.subject | Splitting method | es_ES |
dc.subject | Padé approximation | es_ES |
dc.subject | Backward error analysis | es_ES |
dc.subject.classification | MATEMATICA APLICADA | es_ES |
dc.title | The scaling, splitting, and squaring method for the exponential of perturbed matrices | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1137/14098003X | 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 | Bader, P.; Blanes Zamora, S.; Seydaoglu, M. (2015). The scaling, splitting, and squaring method for the exponential of perturbed matrices. SIAM Journal on Matrix Analysis and Applications. 36(2):594-614. doi:10.1137/14098003X | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | http://doi.org/10.1137/14098003X | es_ES |
dc.description.upvformatpinicio | 594 | es_ES |
dc.description.upvformatpfin | 614 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 36 | es_ES |
dc.description.issue | 2 | es_ES |
dc.relation.pasarela | S\303760 | es_ES |