∀ {K : Type u_2} {L : Type u_3} [inst : LieRing L] [inst_1 : Field K] [inst_2 : LieAlgebra K L]
  [inst_3 : FiniteDimensional K L] {H : LieSubalgebra K L} [inst_4 : H.IsCartanSubalgebra] [LieAlgebra.IsKilling K L]
  [LieModule.IsTriangularizable K (↥H) L] [inst_7 : CharZero K] (α : LieModule.Weight K (↥H) L),
  Disjoint LieModule.Weight.ker (LieIdeal.toLieSubalgebra K (↥H) (LieAlgebra.corootSpace ⇑α)).toSubmodule