Contra Harmonic Index Of Graphs

S.Ragavi; R.Sridevi

doi:https://doi.org/10.14445/22315373/IJMTT-V66I12P516

International Journal of Mathematics Trends and Technology

Research Article | Open Access | Download PDF

Volume 66 | Issue 12 | Year 2020 | Article Id. IJMTT-V66I12P516 | DOI : https://doi.org/10.14445/22315373/IJMTT-V66I12P516

Contra Harmonic Index Of Graphs

S.Ragavi, R.Sridevi

Abstract

Let G be amolecular graph with vertex set V(G) and edge set E(G). We introduce a new topological index namely Contra Harmonic index which is defined as CH(G) = ΣuvεE(G)d(u)2+d(v)2 / d(u)+d(v) where d(u) and d(v) are the degree of the vertices u and v.In this paper, we obtained bounds for contra harmonic index of graphs.

Keywords

Contra Harmonic index, Contra Harmonic Co-index

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Citation :

S.Ragavi, R.Sridevi, "Contra Harmonic Index Of Graphs," International Journal of Mathematics Trends and Technology (IJMTT), vol. 66, no. 12, pp. 116-121, 2020. Crossref, https://doi.org/10.14445/22315373/IJMTT-V66I12P516