KnowraRamsey's theoremLinked fromLinked fromThe 8 pages that link to Ramsey's theorem, each with the reason it gives.All 8Broader topic 1Related 3Narrower topic 1Compared with 3Pigeonhole principleRelated: Pigeonhole-style counting helps establish the existence of repeated patterns in finite structures.Schur's theoremRelated: Schur's result is a concrete additive precursor to broader Ramsey theorems.Erdős–Szekeres theorem (monotone subsequences)Related: The sequence result is a small, explicit instance of unavoidable order patterns.