| Issue |
ESAIM: M2AN
Volume 37, Number 1, January/February 2003
|
|
|---|---|---|
| Page(s) | 133 - 142 | |
| DOI | https://doi.org/10.1051/m2an:2003016 | |
| Published online | 15 March 2003 | |
Numerical Study of Two Sparse AMG-methods
University of Jyväskylä,
Department of Mathematical Information Technology,
P.O. Box 35 (Agora), 40351 Jyväskylä, Finland. Janne.Martikainen@mit.jyu.fi.
Received:
30
November
2001
Revised:
9
October
2002
A sparse algebraic multigrid method is studied as a cheap and accurate way to compute approximations of Schur complements of matrices arising from the discretization of some symmetric and positive definite partial differential operators. The construction of such a multigrid is discussed and numerical experiments are used to verify the properties of the method.
Mathematics Subject Classification: 65F10 / 65N22
Key words: Algebraic multigrid / Schur complement / Lagrange multipliers.
© EDP Sciences, SMAI, 2003
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