EDGE VERSION OF SOMBOR AND NIRMALA INDICES OF SOME NANOTUBES AND NANOTORI
V. R. Kulli · INTERNATIONAL JOURNAL OF MATHEMATICS AND COMPUTER RESEARCH · 2023
Chemical Graph Theory is a branch of Mathematical Chemistry whose focus of interest is to finding topological indices of chemical graphs which correlate well with chemical properties of the chemical molecules. In this study, we define the edge version of Sombor index, the edge version of modified Sombor index and, the edge version of Nirmala index of a graph and compute exact formulas for certain families of nanotubes and nanotori.