| 若干Halin图类的PI指数 |
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| 引用本文： | 何丽丽,郝建修.若干Halin图类的PI指数[J].丽水学院学报,2011(5):9-11. |
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| 作者姓名： | 何丽丽 郝建修 |
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| 作者单位： | 浙江师范大学数理与信息工程学院; |
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| 摘 要： | Padmakar-Ivan（PI）指数是一个类似于Wiener指数的拓扑指数,它能够反应有机分子的某些结构特征。给出给定顶点数和叶子节点数的Halin图的PI指数,并刻画具有相应PI指数的Halin图类。
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| 关 键 词： | PI指数 有机分子 Halin图 叶子节点数 |
The PI Indices of Some Halin Graphs |
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| He Lili,Hao Jianxiu.The PI Indices of Some Halin Graphs[J].Journal of Lishui University,2011(5):9-11. |
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| Authors: | He Lili Hao Jianxiu |
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| Institution: | He Lili,Hao Jianxiu (Institute of Mathematics,Physics and Information Sciences,Zhejiang Normal University,Jinhua Zhejiang 321004,China) |
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| Abstract: | The Padmakar-Ivan(PI) indexis is a Wiener-Szeged-like topological index which reflects certain structural features of organic molecules.In this paper,we present the PI indices of the Halin graphs with given order and leaf number,and we characterize the Halin graphs with the corresponding PI indices. |
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| Keywords: | PI indices organic molecules Halin graphs Leaf number |
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