Block approximate inverse preconditioners for sparse nonsymmetric linear systems (Q964129)
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scientific article; zbMATH DE number 5692983
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Block approximate inverse preconditioners for sparse nonsymmetric linear systems |
scientific article; zbMATH DE number 5692983 |
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Block approximate inverse preconditioners for sparse nonsymmetric linear systems (English)
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14 April 2010
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The authors propose and theoretically analyze a preconditioning technique for block form partitioned matrices. The computation of preconditioners involves consecutive updates of variable rank of an initial and nonsingular matrix and the application of Sherman-Morrison-Woodbury formula to compute an approximate inverse decomposition of the updated matrices.
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approximate inverse preconditioners
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variable rank updates
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block algorithms
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Krylov iterative methods
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Sherman-Morrison-Woodbury formula
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0.9611186
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0.9611186
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0.94500226
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0.9395634
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0.93786216
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0.93487763
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0.9297169
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