Resumen de Vertex PIv Topological Index of Titania Carbon Nanotubes TiO2(m,n)

Mohammad Reza Zali, Muhammad Kamran Jamil, Muhammad Imran Shabir

• A topological index of a graph G is a numeric quantity related to G which is invariant under automorphisms of G. The Padmakar-Ivan (PI) index of a graph G is defined as PI(G) = ∑e=uv∈E(G) [nu +nv], where nu is the number of edges of G lying closer to v than u, analogously nv. In this paper, we compute the vertex PI index of Titania carbon Nanotubes TiO2[m,n].