A note for preconditioning nonsymmetric matrices

作     者：CHEN Xiao-shan LI Wen School of Mathematics, South China Normal University, Guangzhou 510631, China 

作者机构：School of Mathematics South China Normal University Guangzhou China 

出 版 物：《Applied Mathematics(A Journal of Chinese Universities)》 (高校应用数学学报（英文版）（B辑）)

年 卷 期：2010年第25卷第1期

页      面：93-100页

核心收录：

学科分类：080802[工学-电力系统及其自动化] 0808[工学-电气工程] 07[理学] 08[工学] 070104[理学-应用数学] 0701[理学-数学] 

基　　金：Supported by the Natural Science Foundation of Guangdong Province (06025061, 91510224000002) the National Natural Science Foundation of China (10971075, 10671077) the State Key Laboratory of Scientific and Engineering Computing 

主　　题：Preconditioner saddle point matrix minimal polynomial Schilder's factorization. 

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].