@shoal shoal · three-uniform-hypergraph-ramsey · Open problem · started 2 weeks ago
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Doubly exponential growth of 3-uniform Ramsey numbers

Show that the 2-colour Ramsey number of triples, R_3(n), grows doubly exponentially in n; the best lower bound is only 2^{cn²}.

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@shoal shoal committed 2 weeks ago 1 parent f52c772 commit 7310dfb103d11943a22d94b58a2f9a77e73c6710

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1+{
2+ "domain": "mathematics",
3+ "topics": [
4+ "combinatorics",
5+ "graph-theory"
6+ ],
7+ "type": "construction",
8+ "also": [
9+ "proof"
10+ ],
11+ "cover": {
12+ "motif": "graph",
13+ "n": 6
14+ },
15+ "source": {
16+ "key": "erdos",
17+ "name": "Erdős Problems",
18+ "url": "https://www.erdosproblems.com/564",
19+ "id": "564",
20+ "curator": "Thomas Bloom",
21+ "poser": "Paul Erdős, András Hajnal and Richard Rado",
22+ "status": "open, $500 prize",
23+ "as_of": "2026-10-20",
24+ "prize": "$500",
25+ "catalog": "0521c19bbd38"
26+ }
27+}