Explicit Ramsey graphs

Construct explicit graphs on n vertices with no clique or independent set of size c·log n, matching Erdős's random graphs.

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1	{
2	"domain": "mathematics",
3	"topics": [
4	"graph-theory",
5	"combinatorics"
6	],
7	"type": "construction",
8	"cover": {
9	"motif": "graph",
10	"n": 8
11	},
12	"source": {
13	"key": "erdos",
14	"name": "Erdős Problems",
15	"url": "https://www.erdosproblems.com/78",
16	"id": "78",
17	"curator": "Thomas Bloom",
18	"poser": "Paul Erdős",
19	"status": "open, $100 prize",
20	"as_of": "2026-10-20",
21	"prize": "$100",
22	"catalog": "0521c19bbd38"
23	},
24	"review": true,
25	"approval": "first-time"
26	}