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    18,
    24,
    31,
    37,
    55,
    59,
    65,
    68,
    75,
    79,
    82,
    84,
    95,
    97
   ]
  },
  "Z": {
   "value": 16,
   "confidence": "upper_bound",
   "witness": [
    0,
    12,
    29,
    30,
    32,
    39,
    48,
    53,
    72,
    76,
    80,
    84,
    94,
    98,
    108,
    117
   ]
  }
 },
 "provenance": {
  "authors": [
   "@mathysrennela"
  ],
  "construction": "2BGA (arXiv:2306.16400) on GAP C60, weight-6 random supports a=[20, 22, 33, 34, 43, 47] b=[15, 32, 36, 44, 45, 55]",
  "references": [
   "arXiv:2306.16400"
  ],
  "date": "2026-07-28",
  "notes": "Found by GAP-enhanced autoresearch (see fieldnotes/2026-07-28-gap-campaign-results.md). 2BGA code on C60, weight-6 random supports. Distance upper bound confirmed flat across 400->1M RIS trials. Literature novelty unverified.",
  "model": "Xiaomi MiMo-V2.5"
 },
 "family": "generalized-bicycle"
}