@article{farahani2014,
author = {Farahani, Mohammad Reza},
title = {$\Pi$(G,x) Polynomial and $\Pi$(G) Index of Armchair Polyhex Nanotubes TUAC6[m,n]},
year = {2014},
month = {7},
volume = {36},
pages = {201--206},
journal = {International Letters of Chemistry, Physics and Astronomy},
doi = {10.18052/www.scipress.com/ILCPA.36.201},
keywords = {Molecular Graph, Armchair Polyhex Nanotubes, Pi Index, Omega Polynomial, Pi Polynomial, Nanotori},
abstract = {Let G be a simple connected graph with the vertex set V = V(G) and the edge set E = E(G), without loops and multiple edges. For counting qoc strips in G, Omega polynomial was introduced by Diudea and was defined as $\Omega$(G,x) = ∑cm(G,c)xc where m(G,c) be number of qoc strips of length c in the graph G. Following Omega polynomial, the Sadhana polynomial was defined by Ashrafi et al as Sd(G,x) = ∑cm(G,c)x[E(G)]-c in this paper we compute the Pi polynomial $\Pi$(G,x) = ∑cm(G,c)x[E(G)]-c and Pi Index $\Pi$(G ) = ∑cc·m(G,c)([E(G)]-c) of an infinite class of “Armchair polyhex nanotubes TUAC6[m,n]”.}
}