Fast superoptimal preconditioning of multiindex Toeplitz matrices (Q855545)
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scientific article; zbMATH DE number 5077995
| Language | Label | Description | Also known as |
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| English | Fast superoptimal preconditioning of multiindex Toeplitz matrices |
scientific article; zbMATH DE number 5077995 |
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Fast superoptimal preconditioning of multiindex Toeplitz matrices (English)
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7 December 2006
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The authors extend and analyse the numerical implementation of \textit{G. Strang} [Stud. Appl. Math. 74, 171--176 (1986; Zbl 0621.65025)], optimal and superoptimal circulant preconditioning methods from one-index to \(d\)-index Toeplitz matrices. In this sense they generalize two algorithms previously proposed by \textit{R. H. Chan, X.-Q. Jin}, and \textit{M. C. Yeung} [Linear Algebra Appl. 149, 41--53 (1991; Zbl 0717.15017)] and by \textit{M. Tismenetsky} [ibid. 154--156, 105--121 (1991; Zbl 0734.65039)].
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circulant preconditioning
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algorithms
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