Symmetric division deg and inverse sum indeg indices of polycyclic aromatic hydrocarbons (PAHs) and polyhex nanotubes

Abstract

Polycyclic aromatic hydrocarbons (PAHs) have been the focus of great recognition for a long time owing to their impact on public health and environment. Also polyhex nanotubes have been intensively studied with respect to their promise to exhibit unique physical properties: mechanical, optical, electronics etc. In this article, we overview the chemical applications and analyze the mathematical properties of the discrete adriatic indices, namely symmetric division deg (SDD) index, inverse sum indeg (ISI) index and their polynomials on PAHs and polyhex nanotubes.