作者: Mohammad Reza Farahani
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摘要: Let G=(V; E) be a simple connected graph. The sets of vertices and edges G are denoted by V=V(G) E=E (G), respectively. geometric-arithmetic index is topological was introduced Vukicevic Furtula in 2009 defined as in which degree vertex u d (u) (or for short). In 2011, A. Graovac et al new version GA where The goal this paper to compute the fifth "Circumcoronene series benzenoid H k (k≥1) ".