Ordering trees with given pendent vertices with respect to Merrifield-Simmons indices and Hosoya indices

被引:13
|
作者
Lv, Xuezheng [1 ]
Yan, Yan [1 ]
Yu, Aimei [2 ]
Zhang, Jingjing [1 ]
机构
[1] Renmin Univ China, Dept Math, Beijing 100872, Peoples R China
[2] Beijing Jiaotong Univ, Dept Math, Beijing 100044, Peoples R China
基金
中国国家自然科学基金;
关键词
Trees; Merrifield-Simmons indices; Hosoya indices; Pendent vertices; EXTREMAL HEXAGONAL CHAINS; FIBONACCI NUMBERS; GRAPHS;
D O I
10.1007/s10910-009-9526-4
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The Merrifield-Simmons index of a graph is defined as the total number of the independent sets of the graph and the Hosoya index of a graph is defined as the total number of the matchings of the graph. In this paper, we order a kind of trees with given number of pendent vertices with respect to Merrifield-Simmons indices and Hosoya indices.
引用
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页码:11 / 20
页数:10
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