A note for preconditioning nonsymmetric matrices

作者:Chen Xiao shan*; Li Wen
来源:Applied Mathematics-A Journal of Chinese Universities Series B, 2010, 25(1): 93-100.
DOI:10.1007/s11766-010-1934-5

摘要

In this paper, we consider preconditioners for generalized saddle point systems with a nonsymmetric coefficient matrix. A constraint preconditioner for this systems is constructed, and some spectral properties of the preconditioned matrix are given. Our results extend the corresponding ones in [3] and [4].

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