对角元有变化的对称正定方程组的解  

Solve a Symmetric Positive Definite System of Linear Equations Which Matrix of Coefficients Has a Varying Diagonal Element

作　　者：吴筑筑[1] 

机构地区：[1]韶关大学计算机系,广东韶关512003

出　　处：《韶关大学学报》1999年第4期8-13,共6页

摘　　要：本文给出对角元有个别变化时求解对称正定方程组的一种校正算法，如果在某种迭代过程中需反复求解这类方程组，则用该算法可减少计算量，较大地提高计算效率。This paper deals with a symmetric positive definite system of linear equations,which matrix of coefficients has a varying diagonal element with positive increment. A correctalgorithm is presented. The algorithm can be used in the iterative process of repeatedly solvingan above - mentioned system and improve efficiency of the process.

关 键 词：算法 方程组 对称正定矩阵 对角元 数值问题 

分 类 号：O241.6[理学—计算数学]