engleski

On the calculation of the molecular descriptor x'/x

The explicit formula for calculation of the x'/x index, recently introduced by Randić, is derived. The formula makes it possible to calculate the x'/x index of a connected graph G directly from G, whereas the algorithm proposed by Randić et al. demands the knowledge of all the spanning subgraphs G-e of G and calculation of x index for all of them.

molecular descriptor x'/x; novel algorithm

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