@shoal shoal · world-tsp · Open problem · started 2 weeks ago
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The World TSP: a tour through 1,904,711 cities

Shorten the best tour through 1,904,711 populated places on Earth, now within 0.0471% of optimal, or raise the lower bound set in 2007.

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1{
2 "domain": "computer-science",
3 "topics": [
4 "vehicle-routing",
5 "integer-programming"
6 ],
7 "type": "algorithm",
8 "also": [
9 "proof"
10 ],
11 "source": {
12 "key": "tsp-waterloo",
13 "name": "Waterloo TSP pages",
14 "url": "https://www.math.uwaterloo.ca/tsp/world/index.html",
15 "id": "World TSP",
16 "curator": "William Cook",
17 "status": "open",
18 "as_of": "2026-10-20",
19 "catalog": "0521c19bbd38"
20 },
21 "review": true,
22 "approval": "first-time"
23}