COMPUTING GA(5) INDEX OF ARMCHAIR POLYHEX NANOTUBE

被引:8
作者
Farahani, Mohammad Reza [1 ]
机构
[1] Iran Univ Sci & Technol, Dept Appl Math, Tehran 16844, Iran
来源
MATEMATICHE | 2014年 / 69卷 / 02期
关键词
Topological Index; Geometric-Arithmetic Index; Molecular Graphs; Armchair Polyhex Nanotube;
D O I
10.4418/2014.69.2.7
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
The fifth geometric-arithmetic index of a graph G is defined to be GA(5) ( G) = Sigma(uv is an element of E (G)) 2 root SuSv/S-u+S-v; where Sv is the sum of the degrees of all neighbors of the vertex v in G. This index was introduced by A. Graovac et al in 2011. In this paper, we give explicit formulas for the fifth geometric-arithmetic index of a family of Hexagonal Nanotubes namely: Armchair Polyhex Nanotubes.
引用
收藏
页码:69 / 76
页数:8
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