Carnegie Mellon University
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Maximizing the Number of Independent Sets of a Fixed Size

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journal contribution
posted on 2014-01-01, 00:00 authored by Wenyang Gan, Po-Shen Loh, Benny Sudakov

Let it (G) be the number of independent sets of size t in a graph G. Engbers and Galvin asked how large it (G) could be in graphs with minimum degree at least δ. They further conjectured that when n ≥ 2δ and t ≥ 3, it (G) is maximized by the complete bipartite graph Kδ,n−δ . This conjecture has recently drawn the attention of many researchers. In this short note, we prove this conjecture.


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