摘要

The geometric-arithmetic index is another topological index was defined as GA(G) = Sigma(uv is an element of E)2 root dudv/du + dv in which degree of vertex u denoted by du. Now we define a new version of GA index as GA(4)(G) = Sigma(uv is an element of E)2 root epsilon(u)epsilon(v)/epsilon(u) + epsilon(v), in which epsilon(u) is the eccentricity of vertex u. The goal of this paper is to further the study of the GA(4) index.

  • 出版日期2010-12