Computing fifth geometric-arithmetic index for nanostar dendrimers

نویسندگان
Graovac, Ante ID 1
Ghorbani, Modjtaba ID 2
Hosseinzadeh, Mohammad Ali ID 3

1 Institute R. Bošković, HR-10002 Zagreb, POB 180, Croatia, and Faculty of Science, University of Split Nikole Tesle 12, HR-21000, Split, Croatia

2 Department of Mathematics, Faculty of Science, Shahid Rajaee Teacher Training University, Tehran, 16785 – 136, I. R. Iran

3

doi
10.22061/jmns.2011.461
چکیده

The geometric-arithmetic index is a topological index was defined as GA(G)=∑uv2(dudv)1/2/(du+dv), in which degree of vertex u denoted by dG(u ). Now we define a new version of GA index as GA5(G)=∑uv2(δuδv)1/2/(δu+δv) ,  where δu=∑uvdv. The goal of this paper is to further the study of the GA5 index.

کلیدواژه‌ها
GA index, GA5 index, Dendrimers