This survey reports on classical ramsey numbers in combinatorics, highlighting their unresolved nature.
We survey several longstanding open problems on classical Ramsey numbers. These problems are easy to state but hard to solve while their history and developments are intimately associated with major advances in combinatorics.
No takes yet. Share an insight, caveat, or question.
Fan Chun (2025) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: