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Apr 28, 2017 at 9:59 comment added Adam P. Goucher I claim 2 is harder to prove: you have to actually think, rather than apply Ramsey's theorem.
Oct 14, 2010 at 19:11 history made wiki Post Made Community Wiki
Mar 5, 2010 at 15:57 history edited gowers CC BY-SA 2.5
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Mar 5, 2010 at 14:19 history answered gowers CC BY-SA 2.5