Weighted PI index of edge corona product of some classes of graphs

The investigation of a graph’s topology using numerical quantities known as “Topological indices” is a developing topic in graph theory. The primary goal is to estimate the Weighted PI Index of Edge Corona Product, one of the topological indices, for a variety of simple graphs. The study of the molecular structure of chemical compounds is one of the most recent areas of interest in graph theory, along with the visualization of graphs in Google maps, nanochemistry, network design in electrical and electronic engineering, and computer science. Topological indices are estimated to analyze chemical substances and their physio-chemical characteristics. Some exceptional instances of WPI of those graphs are assessed based on the computed results.