本文研究了超图的本原性质.运用图论方法,得到了具宵秩r(≥3)的所有n阶本原有向超图的指数集,并刻划了其极超图。
In this article, we study primitive hypergraphs. By using graph theoretical methods, we obtain that the exponent set of primitive hypergraphs of order n with rank r. Furthermore,the extremal hypergraphs are described.