最大Randi指标的k悬挂点化学树的性质(英文)

Properties of Chemical Trees with k Pendant Vertices and Maximal Randi Index

化学分子图G的Randi指标为R(G)=∑_(u,v)(d_G(u)d_G(v))^(-(1/2).其中uv是G的边,d_G(u)表示G的顶点u的度.本文刻画了具有最大Randi指标的k悬挂点化学树的一些性质.

The Randid index of an chemical molecule whose molecular graph is G is the sum of the weights （dG （u）dG （v））^- 2/1 of all edges ut, of G, where dG （u） denotes the degree of the vertex u of the molecular graph G. In this paper, we character some properties of chemical trees with k pendant vertices and maximal Randic index.