{
  "number": 293,
  "title": "The13K arrangement and fixed8K reflection",
  "slug": "13K_Arrangement_Fixed_8K_Reflection",
  "question": "Does the odd-level arrangement close under the fixed4232 reflection composition?",
  "date": "2026-09-24",
  "scope": "Mirror and529; regular Gears Noah/Shem/Flood only; no canonical or graph changes",
  "source_qualifications": "Retain phase ancestry, profile/state/frame and event identity; generated coordinates do not add events.",
  "research_authorization": "Sequential batch through C310; reassess after every step"
}