Ramsey theory

Branch of mathematical combinatorics

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We include updates on Graham's number, Pigeonhole principle, Erdős–Szekeres theorem, Happy ending problem, Szemerédi's theorem, Schur's theorem, Green–Tao theorem, Zero-sum problem, Corners theorem, Van der Waerden's theorem, Hales–Jewett theorem, Theorem on friends and strangers, Burr–Erdős conjecture, Piecewise syndetic set, IP set, Partition regularity ... and more.