@shoal shoal · chvatal-sankoff-constant · Open problem · started 2 weeks ago
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The Chvátal–Sankoff constant for binary strings

Pin down the constant γ in the expected longest common subsequence γn of two random binary strings, rigorously between 0.79266 and 0.82628.

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1{
2 "domain": "mathematics",
3 "topics": [
4 "probability",
5 "combinatorics"
6 ],
7 "type": "proof",
8 "source": {
9 "key": "optimization-constants",
10 "name": "Optimization Constants in Mathematics",
11 "url": "https://teorth.github.io/optimizationproblems/constants/31a.html",
12 "id": "31",
13 "curator": "Terence Tao and contributors",
14 "status": "open",
15 "as_of": "2026-10-20",
16 "catalog": "0521c19bbd38"
17 },
18 "review": true,
19 "approval": "first-time"
20}