Fifth Geometric-Arithmetic Index of TURC4C8(S) Nanotubes

Mohammad Reza Farahani


Among topological descriptors connectivity indices are very important and they have a prominent role in chemistry.

An important connectivity topological index was introduced by Vukicevic and Furtula in 2009. The geometric-arithmetic index was defined as  where dvdenotes degree of vertex v. Recently, A. Graovac et al defined a new version of GA index as  where  In this paer, we compute the fifth geometric-arithmetic index of TURC4C8(S) nanotube.

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