University of KashanIranian Journal of Mathematical Chemistry2228-64891Issue 1 (Special Issue on the Role of PI Index in Nanotechnology)20100401Omega Polynomial in All R[8] Lattices6977513510.22052/ijmc.2010.5135ENM. V.DIUDEA“Babes-Bolyai” University, Cluj,
RomaniaJournal Article20140420Omega 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[8] faces, related to the famous Dyck graph, is given.http://ijmc.kashanu.ac.ir/article_5135_463c4d3a0e2258ddb04ccb6462bc892c.pdf