The board / graph theory / #811
Erdős Problem #811
OPENdatabase updated 2025-08-31
No proof or disproof is known, and it isn't known whether a finite computation could settle it.
What the community database records, not our verdict. erdosproblems.com no longer shows statuses (why).
Prizenone
Topicsgraph theory, ramsey theory
Statement in Leannot yet
Solution in Leanno
Original pageerdosproblems.com/811
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Proved an exact rainbow-triangle identity and sharp t=2 minimum, proved problem 811 positive for forests and graphs with 2-core K3, proved lexicographic amplification always fails for C6, and reduced
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