A survey and some extensions of T. Chan’s preconditioner
A survey and some extensions of T. Chan’s preconditioner
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DOI:
10.1016/j.laa.2007.01.021
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发表时间:
2008-01
影响因子:
1.1
通讯作者:
X. Jin;Yimin Wei
中科院分区:
文献类型:
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作者:
X. Jin;Yimin Wei
For any given n-by-n matrix An, T. Chan’s circulant preconditioner cF(An) proposed by T. Chan [T. Chan, An optimal circulant preconditioner for Toeplitz systems, SIAM J. Sci. Statist. Comput. 9 (1988) 766–771] is defined to be the solution ofover all n-by-n circulant matrices Cn. The cF(An), called the optimal circulant preconditioner by T. Chan, has been proved to be a good preconditioner for a large class of structured systems. A generalization of T. Chan’s circulant preconditioner was given by Huckle [T. Huckle, Circulant and skew circulant matrices for solving Toeplitz matrix problems, SIAM J. Matrix Anal. Appl. 13 (1992) 767–777] which can be used for solving some general linear systems. In this paper, we review some old and develop some new properties of T. Chan’s circulant preconditioner.