General Zagreb Topological Coindices for the Benzenoid Circumcoronene Series

Abstract

Many applications in chemistry are enabled by chemical graph theory, which is a branch of graph theory. Numerical quantities derived from the chemical graphs of a molecule, known as topological parameters (indices and coindices), are used to model the chemical and physical properties of molecules. Although many researchers have contributed to the computation of topological indices, studies on the computation of topological coindices are very limited. This paper focuses on topological coindices, specifically the general Zagreb coindices for the benzenoid circumcoronene series. The formulas for the first general Zagreb coindex, the second general Zagreb coindex, and their special cases for this series (benzenoid circumcoronene series) are computed.