期刊论文

中文

数学杂志

0255-7797

2015

35

2

207-213

10.3969/j.issn.0255-7797.2015.02.001

Partially Supported by National Natural Science Foundation of China（11271147） Acknowledgement The authors thank Professor Qin Hong and Dr. Yan Ting in Central China Normal University for viewing this paper and helpful comments. This research was partially supported by the NNSF of China （No. 11271147）.

本校为第一机构

本文研究了非负对称矩阵的近似逆矩阵问.利用矩阵S =(si,j )去近似它的逆矩阵方法,获得了近似误差的一个显式上界,并且证明了近似逆的误差对于很大的n一致地具有阶1/(n?1)2.

This paper studies the issue of the approximated inverse of nonnegative symmetric matrices. By using the matrix S = (S_(i, j)) to approximate its inverse, an explicit bound on the approximation error is obtained, and one conclusion that the inverse is well approximated to the order l/(n - l)...