Computing Padmakar-Ivan index of four classes of dendrimers

被引：0
|
作者：
Ashrafi, A. R. [1 ]
Shabani, H. [1 ]
机构：
[1] Univ Kashan, Fac Sci, Dept Math Stat & Comp Sci, Kashan 8731751167, Iran
来源：
BULGARIAN CHEMICAL COMMUNICATIONS | 2012年 / 44卷 / 02期
基金：
美国国家科学基金会;
关键词：
Dendrimer; PI index; PI-INDEX; TOPOLOGICAL INDEXES; INFINITE FAMILY; SZEGED INDEXES; WIENER INDEX; OMEGA; NANOTUBES; VERTEX;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Suppose G is a connected graph, e = uv is an edge of G, n(u)(e) is the number of edges lying closer to u than v and n(v)(e) is defined analogously. The Padmakar-Ivan index of G is a graph invariant defined as the summation of [n(u) + n(v)] over all edges of G. General formulas are given for the Padmakar-Ivan index of dendrimers.
引用
收藏
页码：127 / 130
页数：4
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