Monthly Archives: June 2013

Double van der Waerden

— 1. Introduction — In a previous post I presented a proof of van der Waerden’s theorem on arithmetic progressions: Theorem 1 (van der Waerden, 1927) Consider a partition of the set of the natural numbers into finitely many pieces … Continue reading

Posted in Combinatorics, Ramsey Theory | Tagged , , , | 4 Comments