Symmetry-based topological indices of molecular graphs

چکیده مقاله

ُSuppose M is a molecule with molecular graph G and A is the set of all such graphs. A topological index is a function alpha from A into real numbers such that G_1 cong G_2 implies that alpha(G_1) = alpha(G_2), for all G_1, G_2 in A. These invariants can be correlated some physico-chemical properties of molecules. Since usually some given numbers cannot determine the structural properties of a graph, it is natural to combine them with other invariants like symmetry to obtain better chemically important information. In this talk, we report recent results on development of some symmetry-based topological indices of molecular graphs.