Minimum general sum-connectivity index of unicyclic graphs

被引：0
作者：
Zhibin Du
Bo Zhou
Nenad Trinajstić
机构：
[1] South China Normal University,Department of Mathematics
[2] The Rugjer Bošković Institute,undefined
来源：
Journal of Mathematical Chemistry | 2010年 / 48卷
关键词：
General Randić connectivity index; General product-connectivity index; General sum-connectivity index; Properties;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The general sum-connectivity index of a graph G is defined as χα (G) = ∑edges (du + dv)α, where du denotes the degree of vertex u in G and α is a real number. In this report, we determine the minimum and the second minimum values of the general sum-connectivity indices of n-vertex unicyclic graphs for non-zero α ≥ −1, and characterize the corresponding extremal graphs.
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页码：697 / 703
页数：6
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