Theorem RootPairing.coxeterWeight_ne_four_of_linearIndependent

Modification history

2026-09-30 14:37
Mathlib/LinearAlgebra/RootSystem/Reduced.lean
refactor(Algebra/Group): fix the definition of torsion-free non-abelian groups (#42407) …
Modified RootPairing.coxeterWeight_ne_four_of_linearIndependentView on Github →
2025-11-05 11:15
Mathlib/LinearAlgebra/RootSystem/Reduced.lean
chore: use `IsAddTorsionFree M` instead of `NoZeroSMulDivisors ℕ M`/`NoZeroSMulDivisors ℤ M` (#30683) …
Modified RootPairing.coxeterWeight_ne_four_of_linearIndependentView on Github →
2025-02-14 13:43
Mathlib/LinearAlgebra/RootSystem/Basic.lean
feat: characterise linearly dependent roots of root pairings (#21851) …
Modified RootPairing.coxeterWeight_ne_four_of_linearIndependentView on Github →
2024-12-03 14:07
Mathlib/LinearAlgebra/RootSystem/Basic.lean
feat(LinearAlgebra/RootSystem/Finite): Coxeter weights are bounded above by 4 (#19343) …
Added RootPairing.coxeterWeight_ne_four_of_linearIndependentView on Github →