On topological properties of the line graphs of subdivision graphs of certain nanostructures

In the study of QSAR/QSPR, topological indices such as Shultz index, generalized Randic index, Zagreb index, general sum‐connectivity index, atom‐bond connectivity (ABC) index and geometric–arithmetic (GA) index are exploited to estimate the bioactivity of chemical compounds. A topological index attaches a chemical structure with a numeric number. There are numerous applications of graph theory in this field of research. In this paper we computed generalized Randic, general Zagreb, general sum‐connectivity, ABC, GA, ABC 4 and GA 5 indices of the line graphs of 2D‐lattice, nanotube and nanotorus of TUC 4 C 8[p, q] by using the concept of subdivision.