本原指标的一个计算公式

A Calculative Formula on Primitive Index

引入本原图奇途径界及偶途径界的概念,得到了本原指标的一个新的计算公式,并利用这个公式简捷地求得了一些图的本原指标。

We introduced two new concepts, odd walk bounds and even walk bounds of primitive graphs. A calculative formula on the primitive index is obtained, and the primitive index of some graphs is calculated.