The Theta polynomial Θ(G,x) and the Theta index Θ(G) of molecular graph Polycyclic Aromatic Hydrocarbons PAHk
2015 ◽
Vol 12
(1)
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pp. 3934-3939
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Keyword(s):
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.
2014 ◽
Vol 32
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pp. 1-10
2019 ◽
Vol 64
(1)
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pp. 55-67
2019 ◽