Def RootPairing.weylGroup.ofIdx

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 View on Github →