摘要
目的讨论预条件后用迭代法求解的线性方程组Ax=b。方法利用预条件后系数矩阵非负分裂形式的多样性,给出一种含参数形式的非负分裂。结果与结论证明这种分裂形式可以加速SOR迭代法的收敛性,并与一般的预条件后SOR迭代法的收敛性进行比较,说明这些分裂形式更好。
Aim To discuss the preconditioned linear system Ax=b which is solved with iterative method.Methods By using the diversity of nonnegative matrix splitting,a kind of nonnegative splitting with parameter is given.Results and conclusion It is proved that the aforesaid splitting form can accelerate the convergence of SOR iterative method,and the aforesaid form is better than the general preconditioned SOR iterative method.
出处
《宝鸡文理学院学报(自然科学版)》
CAS
2012年第2期13-15,20,共4页
Journal of Baoji University of Arts and Sciences(Natural Science Edition)
基金
国家自然科学基金资助项目(10071048)
宝鸡文理学院重点项目(ZK11015)
关键词
预处理
收敛性
SOR迭代法
M-矩阵
precondition; convergence; the SOR iteration method; M-matrix