Theorem RootPairing.weylGroup.ofIdx_smul

Modification history

2025-04-07 18:17
Mathlib/LinearAlgebra/RootSystem/WeylGroup.lean
feat: a finite crystallographic reduced irreducible root pairing containing two roots with Coxeter weight three is spanned by this pair (#23634)
Added RootPairing.weylGroup.ofIdx_smulView on Github →