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Ramsey's theorem
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== External links == {{Wikibooks|Combinatorics|Bounds for Ramsey numbers|Ramsey numbers}} * {{springer|title=Ramsey theorem|id=p/r077240}} * [https://web.archive.org/web/20080820012759/http://www.ramseyathome.com/ramsey/ Ramsey@Home] is a [[distributed computing]] project designed to find new lower bounds for various Ramsey numbers using a host of different techniques. * [http://www.combinatorics.org/ojs/index.php/eljc/article/view/DS1/pdf The ''Electronic Journal of Combinatorics'' dynamic survey of small Ramsey numbers (by Stanisław Radziszowski)] * [http://mathworld.wolfram.com/RamseyNumber.html Ramsey Number – from MathWorld] (contains lower and upper bounds up to R(19, 19)) * [http://ginger.indstate.edu/ge/RAMSEY/index.html Ramsey Number – Geoffrey Exoo] (Contains R(5, 5) > 42 counter-proof) [[Category:Ramsey theory]] [[Category:Theorems in graph theory]] [[Category:Articles containing proofs]]
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