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| 单圈图的离心连通度指标 | |
| 引用本文： | 郭利涛,徐兰,郭晓峰. 单圈图的离心连通度指标[J]. 数学研究, 2010, 43(4): 322-327 |
| 作者姓名： | 郭利涛 徐兰 郭晓峰 |
| 作者单位： | 厦门大学数学科学学院;昌吉学院; |
| 基金项目： | supported by NSFC(No 10831001); Natural Science Foundation of Fujian Province(2010J05005). |
| 摘 要： | 设G=（V,E）是连通图.G的离心连通度指标定义为（？）~c（G）=∑_（x∈V）ec（x）deg（x）,其中ec（x）是x的离心率,deg（x）是x的度.我们得到了直径为d的单圈图的上下界 |
| 关 键 词： | 离心率 离心连通度指标 |
Note on the Eccentric Connectivity Index of Unicyclic Graphs |
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| Guo Litao,Xu Lan,Guo Xiaofeng. Note on the Eccentric Connectivity Index of Unicyclic Graphs[J]. Journal of Mathematical Study, 2010, 43(4): 322-327 | |
| Authors: | Guo Litao Xu Lan Guo Xiaofeng |
| Affiliation: | Guo Litao~1 Xu Lan~2 Guo Xiaofeng~1 (1.School of Mathematical Sciences Xiamen University,Xiamen Fujian 361005,2.Department of Mathematics Changji College,Changji Xinjiang 831102) |
| Abstract: | Let G = (V, E) be a connected graph. The eccentric connectivity index of G is defined as ξc(G) = ∑x∈V ec(x)deg(x) , where ec(x) is the eccentricity of X, deg(x) is the degree of x. We obtain the lower and upper bounds of unicyclic graphs with diameter, d. |
| Keywords: | Eccentric connectivity index Eccentricity |
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