Document Type : Research Paper
“Babes-Bolyai” University, Cluj, Romania
Omega polynomial Ω(, ) is defined on opposite edge strips ops in a graph G = G(V,E). The first and second derivatives, in X = 1, of Omega polynomial provide the Cluj-Ilmenau CI index. Close formulas for calculating these topological descriptors in an infinite lattice consisting of all R faces, related to the famous Dyck graph, is given.