Comparing pivoting strategies for almost strictly sign regular matrices

Alonso, P. ; Peña, J.M. (Universidad de Zaragoza) ; Serrano, M.L.

Resumen: In this paper some properties of two-determinant pivoting for Neville elimination are presented. In particular, we consider a zero-increasing property and we show an optimal normwise growth factor. Comparisons with other pivoting strategies for Neville elimination and with Gaussian elimination with partial pivoting of almost strictly sign regular matrices are performed. Numerical examples are included.

Idioma: Inglés

DOI: 10.1016/j.cam.2018.02.015

Año: 2018

Publicado en: Journal of Computational and Applied Mathematics 354 (2018), 96-102
ISSN: 0377-0427

Factor impacto JCR: 1.883 (2018)

Categ. JCR: MATHEMATICS, APPLIED rank: 47 / 254 = 0.185 (2018) - Q1 - T1

Factor impacto SCIMAGO: 0.849 - Computational Mathematics (Q2) - Applied Mathematics (Q2)

Financiación: info:eu-repo/grantAgreement/ES/MICINN/MTM2015-68805-REDT
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/MTM2015-65433-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/TIN2017-87600-P

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Matemática Aplicada (Dpto. Matemática Aplicada)