| 一类树的Hosoya指标序列 |
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| 引用本文： | 高玉芬.一类树的Hosoya指标序列[J].湖南文理学院学报(自然科学版),2007,19(2):25-26,45. |
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| 作者姓名： | 高玉芬 |
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| 作者单位： | 青海大学基础部,青海西宁810017 |
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| 摘 要： | 一个图的Hosoya指标是图的所有独立边子集的数目之和,包括空集.T(n1,n2,n3)表示只有一个3度点,三个1度点且唯一3度点到三个一度点的路长分别是n1,n2,n3的树.用代数组合的方法研究了这类树的Hosoya指标值.给出了这类树在一定条件下依Hosoya指标值的排序.
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| 关 键 词： | 拓扑指标 树 Hosoya-指标 类树 指标值 序列 Trees Class Sequence 排序 条件 研究 方法 组合 代数 空集 |
| 文章编号： | 1672-6146（2007）02-0025-02 |
| 修稿时间： | 2007-04-10 |
Hosoya Index Sequence of a Class of Trees |
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| GAO Yu-fen.Hosoya Index Sequence of a Class of Trees[J].Journal of Hunan University of Arts and Science:Natural Science Edition,2007,19(2):25-26,45. |
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| Authors: | GAO Yu-fen |
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| Institution: | Department of Basic Research, Qinghai University, Xining Qinghai 810017 |
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| Abstract: | The Hosoya index of a graph is the number of all indepent edge subsets of a graph, By T ( n1 , n2 , n3 ) denotes a tree with a vertex v of degree 3 and three vertices of degree 1 such that the distances from v to the three vertices of degree 1 are n1 , n2 ,n3 , respectively. In the paper, we study the Hosoya index of tree T ( n1 , n2 , n3 ) and give the order of T ( n1 , n2 , n3 ) by its Hosya index. |
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| Keywords: | topological index Tree Hosoya index |
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