【摘要】 本文基于对称正定矩阵的多级分裂,讨论了这类方程组的多级分裂预处理子的构造,证明了预处理子的合理性.数值试验显示我们的预处理子是有效的.更多还原

【Abstract】 A new preconditioner for symmetric positive definite linear systems is constructed based on the multistage splitting of the coefficient matrix.The validity of the new preconditioner is showed and a numerical example is given to illustrate it.Numerical experimentations show that our preconditioners are effective.更多还原