引入了图的奇直径、偶直径的概念,给出了本原图的本原指数的一个计算公式,讨论了奇直径、偶直径的关系,并利用我们的结果给出了邵嘉裕教授在《中国科学》发表的一个著名结论的简捷证明.
This paper begins with the introduction of the concept of odd diameter and even diameter. Then it discusses the relationship between odd diameter andeven diameter, and presents a calculative formula of primitive graph's primitive exponent, based on which a simple proof is demonstrated for the well-known result in Prof. Shao Jiayu's paper published in Journal of science in China.