部分对称逆M矩阵完备化的必要条件

A necessary condition for the completion of a partially symmetric inverse M-matrix

用图论方法给出了部分对称逆M矩阵完备化的一个必要条件,并且举例说明了文献[3]中的几处错误.

A necessary condition for a partially symmetric inverse Mmatrix is given by means of graph theoretic in this paper.And several mistakes in ［3］ are pointed out by examples.