supported by the National Natural Science Pre-Research Foundation(SDY2011B01);the College Postgraduate Research and Innovation Project of Jiangsu Province(CX10B-029Z);the Nominated Excellent Thesis for PHD Candidates Program of Soochow University(23320957)
对于(1,1)块为非Hermitian阵的广义鞍点问题,本文给出了一种基于正定和反对称分裂(Positive definite and skew-Hermitian splitting,PSS)的约束预条件子.该预条件子的(1,1)块由求解非Hermitian正定线性方程组时的PSS迭代法所构造得到....