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The best approximation ratio for maximum directed cut

Pin down the best approximation ratio for maximum directed cut, known under the Unique Games Conjecture to lie in [0.87446, 0.87461].

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1{
2 "domain": "computer-science",
3 "topics": [
4 "algorithms-complexity"
5 ],
6 "type": "algorithm",
7 "also": [
8 "proof"
9 ],
10 "source": {
11 "key": "tcs-open-problems",
12 "name": "TCS Open Problems",
13 "url": "https://tcsopenproblems.com/problem/1",
14 "id": "1",
15 "curator": "Kunal Marwaha",
16 "poser": "Kunal Marwaha",
17 "status": "open",
18 "as_of": "2026-10-20",
19 "catalog": "0521c19bbd38"
20 },
21 "review": true,
22 "approval": "first-time"
23}