一类含有偶数个顶点的双色有向图本原指数集

The Exponent Set of a Class of Two-Colored Digraphs with Even Vertices

双色有向图与非负矩阵对可建立一一对应关系,从而将矩阵对的问题转化为图的问题进行研究.借助图论知识,考虑一类含有偶数个顶点的双色有向图,给出本原条件、指数界、指数集,并对极图进行了刻画.

There is a one-to-one relationship between nonnegative matrix pairs and two-colored digraph. So the problem of matrix pairs can be transformed into the problem of graphics. With the knowl- edge of graph theory,a class of two-colored digraphs with even vertices is considered. The primitive condition, exponent bound,exponent set and characteristic of extral two-colored digraphs are given.