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dc.contributor.authorPolezzi, M.-
dc.contributor.authorRanga, A. Sri-
dc.date.accessioned2014-05-20T15:24:43Z-
dc.date.accessioned2016-10-25T17:59:02Z-
dc.date.available2014-05-20T15:24:43Z-
dc.date.available2016-10-25T17:59:02Z-
dc.date.issued2007-03-15-
dc.identifierhttp://dx.doi.org/10.1016/j.cam.2006.01.013-
dc.identifier.citationJournal of Computational and Applied Mathematics. Amsterdam: Elsevier B.V., v. 200, n. 2, p. 576-590, 2007.-
dc.identifier.issn0377-0427-
dc.identifier.urihttp://hdl.handle.net/11449/35282-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/35282-
dc.description.abstractWe improve upon the method of Zhu and Zhu [A method for directly finding the denominator values of rational interpolants, J. Comput. Appl. Math. 148 (2002) 341-348] for finding the denominator values of rational interpolants, reducing considerably the number of arithmetical operations required for their computation. In a second stage, we determine the points (if existent) which can be discarded from the rational interpolation problem. Furthermore, when the interpolant has a linear denominator, we obtain a formula for the barycentric weights which is simpler than the one found by Berrut and Mittelmann [Matrices for the direct determination of the barycentric weights of rational interpolation, J. Comput. Appl. Math. 78 (1997) 355-370]. Subsequently, we give a necessary and sufficient condition for the rational interpolant to have a pole. (c) 2006 Elsevier B.V. All rights reserved.en
dc.format.extent576-590-
dc.language.isoeng-
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.subjectinterpolationpt
dc.subjectrational interpolantspt
dc.subjectdenominator valuespt
dc.subjectbarycentric weightspt
dc.titleOn the denominator values and barycentric weights of rational interpolantsen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual de Mato Grosso do Sul (UEMS)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUEMS, Cassilandia, MS, Brazil-
dc.description.affiliationUniv Estadual Paulista, DCCE IBILCE, BR-15054000 Sao Jose do Rio Preto, SP, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, DCCE IBILCE, BR-15054000 Sao Jose do Rio Preto, SP, Brazil-
dc.identifier.doi10.1016/j.cam.2006.01.013-
dc.identifier.wosWOS:000244279500010-
dc.rights.accessRightsAcesso aberto-
dc.identifier.fileWOS000244279500010.pdf-
dc.relation.ispartofJournal of Computational and Applied Mathematics-
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