Minimizing Wiener Index for Vertex-Weighted Trees with Given Weight and Degree Sequences

preprint2015arXivOpen access

Abstract

In 1997 Klavžar and Gutman suggested a generalization of the Wiener index to vertex-weighted graphs. We minimize the Wiener index over the set of trees with the given vertex weights' and degrees' sequences and show an optimal tree to be the, so-called, Huffman tree built in a bottom-up manner by sequentially connecting vertices of the least weights.

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