Computing Topological Indices of Some Types of H-Naphtalenic Nanotubes and Nanotori

被引:0
作者
Yazdani, Javad [1 ]
Bahrami, Amir [2 ]
机构
[1] Islamic Azad Univ, Kermanshah Branch, Kermanshah, Iran
[2] Islamic Azad Univ, Karaj Branch, Dept Math, Karaj, Iran
关键词
PI Index; Nanotube; Nanotorus; Naphtalenic Nanotubes and Nanotori; WIENER INDEX; PI INDEX;
D O I
10.1166/jctn.2011.1808
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The PI index is a graph invariant defined as the summation of the sums of edges of n(eu) and n(ev) over all the edges of connected molecular graph G, where Nu is the number of edges of G lying closer to u than to v and n(ev) is the number of edges of G lying closer to v than to u. In this paper, the PI index of H-naphtalenic nanotubes and nanotori are computed.
引用
收藏
页码:1264 / 1266
页数:3
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