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Numerical Study of Two Sparse AMG-methods

Published online by Cambridge University Press:  15 March 2003

Janne Martikainen
Janne Martikainen*
Affiliation:
University of Jyväskylä, Department of Mathematical Information Technology, P.O. Box 35 (Agora), 40351 Jyväskylä, Finland. Janne.Martikainen@mit.jyu.fi.
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Abstract

A sparse algebraic multigrid method is studied as a cheap and accurateway to compute approximations of Schur complements of matricesarising from the discretization of some symmetric and positive definitepartial differential operators. The construction of such a multigrid isdiscussed and numerical experiments are used to verify the propertiesof the method.

Keywords

Algebraic multigridSchur complementLagrange multipliers.
Type
Research Article
Information
ESAIM: Mathematical Modelling and Numerical Analysis , Volume 37 , Issue 1 , January 2003 , pp. 133 - 142
Copyright
© EDP Sciences, SMAI, 2003

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