engleski

The four connectivity matrices, their indices, polynomials and spectra

The four connectivity matrices are presented: the vertex-product-connectivity matrix, the edge- product-connectivity matrix, the vertex-sum- connectivity matrix and the edge-sum-connectivity matrix. The half-sum of their matrix elements are the corresponding connectivity indices: the vertex-product-connectivity index, the edge- product-connectivity index, vertex-sum- connectivity index and the edge-sum-connectivity index. The suitability of these four forms of connectivity indices in developing structure- property relationships is illustrated on four sets of alkanes for 14 experimental physico-chemical properties. Their polynomials and spectra are also given. The method used for constructing polynomials of the connectivity matrices considered is the Le Verrier-Fadeev-Frame method, that has been modifed by Balasubramanian and Živković.

connectivity matrix ; connectivity index

nije evidentirano