Wei Gao

On Multiplicative and Redefined Version of Zagreb Indices of V-Phenylenic Nanotubes and Nanotorus

Mohammad Reza Farahani & Wei Gao · Journal of Advances in Mathematics and Computer Science · 2015

Let G be an arbitrary simple and connected graph, with the vertex set V(G) and edge set E(G). The first Zagreb index of a graph G is defined as  , where du and dv are the degrees of u and v, respectively. An alternative expression for M1 (G) is . And similarly, the Second Zagreb...