The Theta polynomial Θ(G,x) and the Theta index Θ(G) of molecular graph Polycyclic Aromatic Hydrocarbons PAHk

Wei Gao, MOHAMMAD REZA FARAHANI
2015 JOURNAL OF ADVANCES IN CHEMISTRY  
The omega polynomial Ω(G,x), for counting qoc strips in molecular graph G was defined by Diudea as with m(G,c), being the number of qoc strips of length c. The Theta polynomial Θ(G,x) and the Theta index Θ(G) of a molecular graph G were defined as Θ(G,x)= and Θ(G)=, respectively.In this paper, we compute the Theta polynomial Θ(G,x) and the Theta index Θ(G) of molecular graph Polycyclic Aromatic Hydrocarbons PAHk, for all positive integer number k.
doi:10.24297/jac.v12i1.847 fatcat:zvtpev3l3vaxxk3qntos2fhvxq