It can easily be seen that a conjecture of RUNGE does not hold for a class of graphs whose members will be called "almost regular". This conjecture is replaced by a weaker one, and a classification of almost regular graphs is given.
A note on regular Ramsey graphs
β Scribed by Noga Alon; Sonny Ben-Shimon; Michael Krivelevich
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 81 KB
- Volume
- 64
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
We prove that there is an absolute constant C>0 so that for every natural n there exists a triangleβfree regular graph with no independent set of size at least \documentclass{article}\usepackage{amssymb}\usepackage{amsbsy}\usepackage[mathscr]{euscript}\footskip=0pc\pagestyle{empty}\begin{document}({{C}}\sqrt{{{n}}\log{{n}}}).\end{document} Β© 2009 Wiley Periodicals, Inc. J Graph Theory 64: 244β249, 2010
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