The First Zagreb and Randić Indices in Random Spiro Chains

Abstract

The Randić ($\mathcal{R}$) and first Zagreb (${\mathcal{M}}_1$) are two important topological indices and located that useful tools in QSPR and QSAR investigations. During this paper, we’ll establish simple formulae for the values of Randić and first Zagreb indices of random spiro chains and present the average of them. Moreover, we comparisons between this of values for two topological indices of random spiro chains.

Keywords:

• Average value
• random spiro chain
• Randić index
• the first Zagreb index

AMS SUBJECT CLASSIFICATION:

• 05C05
• 05C12

Disclosure statement

There are no conflicts of interest.