一个图G的原子键连通度(ABC)指标定义为:ABC( G)=∑d( u) +d( v) - 2 uv∈E d( u) d( v)其中,d(u)表示点U在G中的度数。近年来,对各类聚合物数学化学性质的研究,已逐渐从线性聚合物拓展到更为复杂的聚合物网络。文章考虑基于广义Sierpin ski图的网络模型,获得了聚合物Sierpin’ski图P(G,t)的ABC指标的公式,其中G是一个完全图或一个无三角形6正则图。
The Atom-bond connectivity index of a simple graph G is defined as ABC( G)=∑d( u) +d( v) - 2 uv∈E d( u) d( v) where d( u) denotes the degree of the vertex u. In recent years, the basic works on polymer modeling started from linear polymeric systems to more and more complex polymer networks. In this article, we consider a network model based on generalized networks,in order to get the ABC index of polymer networks graph P ( G,t) ,where G is a complete graph or a triangle free δ-regular graph.