{
  "domain": "mathematics",
  "topics": [
    "combinatorics",
    "coding-theory"
  ],
  "type": "construction",
  "also": [
    "proof"
  ],
  "cover": {
    "motif": "points",
    "n": 10
  },
  "source": {
    "key": "costas-arrays",
    "name": "Open problems in Costas arrays (K. Drakakis)",
    "url": "https://arxiv.org/abs/1102.5727",
    "curator": "Konstantinos Drakakis",
    "status": "open",
    "as_of": "2026-10-20",
    "catalog": "0521c19bbd38"
  }
}