Monthly Archives: December 2013

Van der Waerden’s Theorem is false for $\omega_1$

One of my main research problems involves something I think is related to arithmetic progressions in $\Z$. After learning a nice proof of Van der Waerden’s Theorem, and sharing it with colleagues, Daniel Soukup asked a nice question about Van der Waerden’s Theorem on $\omega_1$. We answered it, and the example was sufficiently nice that […]

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