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A sharp lower bound for the Wiener index of a graph (1008.4039v1)

Published 24 Aug 2010 in cs.DM and math.CO

Abstract: Given a simple connected undirected graph G, the Wiener index W(G) of G is defined as half the sum of the distances over all pairs of vertices of G. In practice, G corresponds to what is known as the molecular graph of an organic compound. We obtain a sharp lower bound for W(G) of an arbitrary graph in terms of the order, size and diameter of G.

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