关于“逆p．n．p．矩阵的表征”的注记

A note to “characterizations of inverse p.n.p. matrices”

由于怀疑文献［１］中定理２有误，故文中建议了一个新的定理。

This paper presents some doubt about the Theorem 2 in , suggests a new theorem and gives a contrary example with respect to the Theorem 2 in .