Multigrid preconditioning in \(H(\text{div})\) on non-convex polygons (Q1286925)
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scientific article; zbMATH DE number 1281838
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Multigrid preconditioning in \(H(\text{div})\) on non-convex polygons |
scientific article; zbMATH DE number 1281838 |
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Multigrid preconditioning in \(H(\text{div})\) on non-convex polygons (English)
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18 May 1999
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A multigrid preconditioner for the finite element discretization of the operator I-grad(div) is presented. The procedure is analyzed without the assumption that the domain is convex. It is shown that the preconditioner is spectrally equivalent to the inverse of the discrete operator.
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multigrid preconditioning
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finite element
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non-convex polygons
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