Szeged Index of $H{C}_5{C}_7[r,p]$ Nanotube

Abstract

A $C_5{C}_7$ net is a trivalent decoration made by alternating pentagons $C_5$ and heptagons $C_7$. It can cover either a cylinder or a torus. In this paper, we compute the Szeged index of $H{C}_5{C}_7[r,p]$ nanotube.