Spectral Analysis for HSS Preconditioners

Spectral Analysis for HSS Preconditioners
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发表时间:
2008-02
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通讯作者:
Lung-chak. Chan;M. Ng;N. Tsing
Lung-chak. Chan;M. Ng;N. Tsing
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其他
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作者:
Lung-chak. Chan;M. Ng;N. Tsing

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本文研究具有非零(2,2)块的鞍点线性系统的HSS预条件子。我们研究了HSS预条件矩阵的谱的一种近似,并利用这些结果来说明和解释从数值例子中获得的谱,其中以前的HSS预条件矩阵的谱分析不包括。
In this paper, we are interested in HSS preconditioners for saddle point linear systems with a nonzero (2,2)-th block. We study an approximation of the spectra of HSS preconditioned matrices and use these results to illustrate and explain the spectra obtained from numerical examples, where the previous spectral analysis of HSS preconditioned matrices does not cover.