Theorems · Theorem · nonassociative algebras

LieAlgebra.InvariantForm.restrict_orthogonal_nondegenerate

∀ {K : Type u_1} {L : Type u_2} [inst : Field K] [inst_1 : LieRing L] [inst_2 : LieAlgebra K L] [Module.Finite K L]
  (Φ : LinearMap.BilinForm K L),
  Φ.Nondegenerate →
    ∀ (hΦ_inv : LinearMap.BilinForm.lieInvariant L Φ),
      Φ.IsRefl →
        (∀ (I : LieIdeal K L), IsAtom I → ¬IsLieAbelian ↥I) →
          ∀ (I : LieIdeal K L),
            IsAtom I →
              (Φ.restrict
                  (LieIdeal.toLieSubalgebra K L
                      (LieAlgebra.InvariantForm.orthogonal Φ hΦ_inv I)).toSubmodule).Nondegenerate

Defined in

Mathlib.Algebra.Lie.InvariantForm

Cited by

0 results in Mathlib

Foundations

Depth 127 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

FieldLieRingLieAlgebraModule.Finite