@misc{ARR-2026-3M1EEG1T689ADSMW-v1,
  author = {Lluis Eriksson},
  title = {{The Exact Four-Level Inverse Commutator Cost: Horn-Littlewood-Richardson Facets, Rank Transitions, and Sharp Loop Synthesis}},
  year = {2026},
  howpublished = {AIRR.SCIENCE},
  note = {Archived manuscript; ARR-2026-3M1EEG1T689ADSMW v1. Not peer reviewed by AIRR. Historical import; not assessed by AIRR.},
  url = {https://airr.science/papers/ARR-2026-3M1EEG1T689ADSMW/versions/v1/}
}