商丘师范学院学报
商丘師範學院學報
상구사범학원학보
Journal of Shangqiu Normal University
2015年
9期
1-6
,共6页
有向图%本原图%m -competition指数
有嚮圖%本原圖%m -competition指數
유향도%본원도%m -competition지수
digraph%primitive digraph%m -competition index
文中讨论了一个含有一个n-2圈和一个n-3圈的n阶本原有向图D 。由D的结构得到本原图Dn-2和Dn-3,然后分别对本原图D , Dn-2和Dn-3中任一点经过k长途径所到达的顶点的集合以及顶点的个数进行分析,再结合m -competition指数的定义,得到这个本原图的m -competition指数。
文中討論瞭一箇含有一箇n-2圈和一箇n-3圈的n階本原有嚮圖D 。由D的結構得到本原圖Dn-2和Dn-3,然後分彆對本原圖D , Dn-2和Dn-3中任一點經過k長途徑所到達的頂點的集閤以及頂點的箇數進行分析,再結閤m -competition指數的定義,得到這箇本原圖的m -competition指數。
문중토론료일개함유일개n-2권화일개n-3권적n계본원유향도D 。유D적결구득도본원도Dn-2화Dn-3,연후분별대본원도D , Dn-2화Dn-3중임일점경과k장도경소도체적정점적집합이급정점적개수진행분석,재결합m -competition지수적정의,득도저개본원도적m -competition지수。
In this paper, a primitive digraph D of order n with one (n -1) -cycle and one (n -2) -cycle is considered.According to the structure of D , we draw up the primitive digraphsDn-2 andDn-3 .Then the sets and the numbers of vertexes, which are formed by each vertex passing a walk of length k in the primitive digraphs D , Dn-2 and Dn-3 are discussed respectively.In addition, based on the definition of m -competition index, we work out the m -competition index of the primitive digraph.