Non-Neighbor Topological Indices for Hydrocarbons

A graph can be represented by a unique number, a matrix, a sequence, and a polynomial which represents the whole graph and these representations are uniquely defined for that graph. The representation of the graph by a unique number is called topological index. Depending on vertex degrees, a large number of molecular-graph-based topological indices have been conceived. Based on the non-neighbors of the vertices of a graph G, Non- Neighbor Zagreb Indices and Non-Neighbor Harmonic Index have been introduced. In this paper we summarize the formula of these Non-Neighbor Topological Indices for Hydrocarbons. Also the computation of these topological indices for basic alkanes, alkenes and alkynes are provided.