Theorem RootPairing.InvariantForm.exists_apply_eq_or

Modification history

2025-03-20 17:27
Mathlib/LinearAlgebra/RootSystem/Finite/Lemmas.lean
feat: a reduced irreducible finite crystallographic root system has roots of at most two different lengths (#23007) …
Added RootPairing.InvariantForm.exists_apply_eq_orView on Github →