Lluis Eriksson (2026). Universal optimal tests of unknown unitary dynamics: determinant exponents and tensor stability. AIRR.SCIENCE, ARR-2026-2GTKNVK5QM9H8BFR, v1. https://airr.science/papers/ARR-2026-2GTKNVK5QM9H8BFR/versions/v1/ Research preprint; ARR-2026-2GTKNVK5QM9H8BFR v1. Not peer reviewed by AIRR. Working paper; not admitted to the AIRR accepted collection.