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 pre...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].展开更多
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
文摘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].
