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The Erdős–Szekeres happy ending problem
Prove that any 2^{n−2}+1 points in general position in the plane contain a convex n-gon; open from n = 7 on.
Update from the catalog #1
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Prove that any 2^{n−2}+1 points in general position in the plane contain a convex n-gon; open from n = 7 on.