| 鞍点问题基于半增广的松弛分裂预条件子 |
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| 引用本文： | 谭宁波,成和平,颜文勇,陈琳.鞍点问题基于半增广的松弛分裂预条件子[J].大学数学,2017,33(2):20-26. |
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| 作者姓名： | 谭宁波 成和平 颜文勇 陈琳 |
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| 作者单位： | 成都工业学院信息与计算科学系,成都,611730 |
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| 摘 要： | 对于(1,1)块为正定的鞍点问题,本文给出了半增广松弛分裂预条件子.文中分析了预条件矩阵特征值分布情况,并用数值实验验证了半增广松弛分裂预条件子的有效性.
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| 关 键 词： | 鞍点问题 预条件 特征值 迭代法 |
A Relaxed Splitting Preconditioner Base on Incomplete Augmentation for Saddle Point Problems |
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| TAN Ning-bo,CHENG He-ping,YAN Wen-yong,CHEN Lin.A Relaxed Splitting Preconditioner Base on Incomplete Augmentation for Saddle Point Problems[J].College Mathematics,2017,33(2):20-26. |
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| Authors: | TAN Ning-bo CHENG He-ping YAN Wen-yong CHEN Lin |
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| Abstract: | A relaxed splitting preconditioner base on incomplete augmentation is presented for the saddle point problems with positive definite (1,1) blocks.Properties of the preconditioned matrix are analyzed.Numerical experiments are illustrated to show the efficiency of the new preconditioner. |
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| Keywords: | saddle points preconditioner iterative method eigenvalues |
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