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 "provenance": {
  "authors": [
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  "construction": "Two-block group-algebra (2BGA) code on the dicyclic (generalized quaternion) group Dic_30 (order 120), a and b each weight-4 group-algebra elements; n=2*120=240, k=8.",
  "origin": "submission",
  "date": "2026-07-31",
  "model": "Claude Opus 4.8"
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 "family": "2bga-coset"
}