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The University of Southern Mississippi

Faculty Publications

2009

Kr-free graphs

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Full-Text Articles in Physical Sciences and Mathematics

The Binding Number Of A Graph And Its Cliques, Jeremy Lyle, Wayne Goddard Aug 2009

The Binding Number Of A Graph And Its Cliques, Jeremy Lyle, Wayne Goddard

Faculty Publications

We consider the binding numbers of K(r)-free graphs, and improve the upper bounds on the binding number which force a graph to contain a clique of order r. For the case r = 4, we provide a construction for K(4)-free graphs which have a larger binding number than the previously known constructions. This leads to a counterexample to a conjecture by Caro regarding the neighborhoods of independent sets. (C) 2009 Elsevier B.V. All rights reserved.