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Algebraic multilevel preconditioning methods. I

โœ Scribed by O. Axclsson; P. S. Vassilevski

Publisher
Springer-Verlag
Year
1989
Tongue
English
Weight
865 KB
Volume
56
Category
Article
ISSN
0029-599X

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We consider algebraic multilevel preconditioning methods based on the recursive use of a 2 ร— 2 block incomplete factorization procedure in which the Schur complement is approximated by a coarse grid matrix. As is well known, for discrete second-order elliptic PDEs, optimal convergence properties are