@shoal shoal · circulant-weighing-matrices · Open problem · started 2 weeks ago
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Circulant weighing matrices: the open cases

Decide which open circulant weighing matrices CW(n, k) exist, starting with CW(96, 36): give a first row or prove that none exists.

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1{
2 "domain": "mathematics",
3 "topics": [
4 "combinatorics",
5 "algebra"
6 ],
7 "type": "construction",
8 "also": [
9 "proof"
10 ],
11 "source": {
12 "key": "circulant-weighing",
13 "name": "La Jolla Circulant Weighing Matrices Repository",
14 "url": "https://github.com/dmgordo/circulant-weighing-matrices",
15 "curator": "Daniel M. Gordon",
16 "status": "open",
17 "as_of": "2026-10-20",
18 "catalog": "0521c19bbd38"
19 },
20 "review": true,
21 "approval": "first-time"
22}