Theorems · Inductive type · nonassociative algebras
LieAlgebra.IsKilling
(R : Type u_1) → (L : Type u_3) → [inst : CommRing R] → [inst_1 : LieRing L] → [LieAlgebra R L] → Prop
We say a Lie algebra is Killing if its Killing form is non-singular. NB: This is not standard terminology (the literature does not seem to name Lie algebras with this property).
- Defined in
- Mathlib.Algebra.Lie.Killing
- Cited by
- 122 results in Mathlib
- Foundations
- Depth 2 from the axioms, rests on 4 definitions · uses no axioms
- Assumes
- CommRingLieRingLieAlgebra
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites3
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- CommRingstatement · cited by 17,173
- LieRingstatement · cited by 1,548
- LieAlgebrastatement · cited by 1,246
Cited by137
Results whose statement or proof uses this declaration.
- LieAlgebra.IsKilling.corootstatement and proof · cited by 34
- LieAlgebra.IsKilling.rootSystemstatement and proof · cited by 24
- LieAlgebra.IsKilling.cartanEquivDualstatement and proof · cited by 17
- LieAlgebra.IsKilling.chainLengthstatement and proof · cited by 17
- LieAlgebra.IsKilling.root_apply_corootstatement and proof · cited by 11
- LieAlgebra.IsKilling.sl2SubmoduleOfRootstatement and proof · cited by 9
- LieAlgebra.IsKilling.lie_eq_smul_of_mem_rootSpacestatement and proof · cited by 8
- LieAlgebra.IsKilling.coe_corootSpace_eq_span_singletonstatement and proof · cited by 7
- LieAlgebra.IsKilling.invtSubmoduleToLieIdealstatement and proof · cited by 7
- LieAlgebra.IsKilling.ker_killingForm_eq_botstatement and proof · cited by 7
- LieAlgebra.IsKilling.chainBotCoeff_add_chainTopCoeffstatement and proof · cited by 6
- LieAlgebra.IsKilling.coroot_eq_zero_iffstatement and proof · cited by 6