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Zhurnal Vychislitel'noi Matematiki i Matematicheskoi Fiziki, 2008, Volume 48, Number 12, Pages 2092–2106
(Mi zvmmf64)
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This article is cited in 4 scientific papers (total in 4 papers)
A continuation method for solving symmetric Toeplitz systems
M. Van Barela, Kh. D. Ikramovb, A. A. Chesnokovba a Department of Computer Science, Katholieke Universiteit Leuven, Celestijnenlaan 200 A, B-3001 Leuven, Belgium
b Faculty of Computational Mathematics and Cybernetics, Moscow State University, Moscow, 119992, Russia
Abstract:
A fast algorithm is proposed for solving symmetric Toeplitz systems. This algorithm continuously transforms the identity matrix into the inverse of a given Toeplitz matrix $T$. The memory requirements for the algorithm are $O(n)$, and its complexity is $O(\log n k(T)n\log n)$, where $k(T)$ is the condition number of $T$. Numerical results are presented that confirm the efficiency of the proposed algorithm.
Key words:
Toeplitz matrices, circulants, superfast algorithm, continuation method, iterative refinement, eigenvalues.
Received: 29.12.2007 Revised: 22.05.2008
Citation:
M. Van Barel, Kh. D. Ikramov, A. A. Chesnokov, “A continuation method for solving symmetric Toeplitz systems”, Zh. Vychisl. Mat. Mat. Fiz., 48:12 (2008), 2092–2106; Comput. Math. Math. Phys., 48:12 (2008), 2126–2139
Linking options:
https://www.mathnet.ru/eng/zvmmf64 https://www.mathnet.ru/eng/zvmmf/v48/i12/p2092
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Abstract page: | 361 | Full-text PDF : | 177 | References: | 72 | First page: | 12 |
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