@misc{ARR-2026-4VD8FW0NRZ8KGSNZ-v1,
  author = {Lluis Eriksson},
  title = {{All-degree Born rigidity in dimensions four and three: an exact simplex optimum and a certified five-outcome frame}},
  year = {2026},
  howpublished = {AIRR.SCIENCE},
  note = {Research preprint; ARR-2026-4VD8FW0NRZ8KGSNZ v1. Not peer reviewed by AIRR.},
  url = {https://airr.science/papers/ARR-2026-4VD8FW0NRZ8KGSNZ/versions/v1/}
}