Hostname: page-component-6898cfcb55-zsp5v Total loading time: 0 Render date: 2026-11-11T03:31:13.598Z Has data issue: false hasContentIssue false

Finite-difference preconditioners for superconsistent pseudospectral approximations

Published online by Cambridge University Press:  15 December 2007

Lorella Fatone
Affiliation:
Dipartimento di Matematica Pura ed Applicata, via Campi 213/b, Università di Modena e Reggio Emilia, Modena 41110, Italy. lorella.fatone@unimo.it; daniele.funaro@unimo.it; s.valentina@tin.it
Daniele Funaro
Affiliation:
Dipartimento di Matematica Pura ed Applicata, via Campi 213/b, Università di Modena e Reggio Emilia, Modena 41110, Italy. lorella.fatone@unimo.it; daniele.funaro@unimo.it; s.valentina@tin.it
Valentina Scannavini
Affiliation:
Dipartimento di Matematica Pura ed Applicata, via Campi 213/b, Università di Modena e Reggio Emilia, Modena 41110, Italy. lorella.fatone@unimo.it; daniele.funaro@unimo.it; s.valentina@tin.it
Get access

Abstract

The superconsistent collocation method, which is based on acollocation grid different from the one used to represent thesolution, has proven to be very accurate in the resolution ofvarious functional equations. Excellent results can be alsoobtained for what concerns preconditioning. Some analysis andnumerous experiments, regarding the use of finite-differencespreconditioners, for matrices arising from pseudospectralapproximations of advection-diffusion boundary value problems, arepresented and discussed, both in the case of Legendre andChebyshev representation nodes.

Information

Type
Research Article
Copyright
© EDP Sciences, SMAI, 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable