∀ {𝕜 : Type u_1} [inst : NontriviallyNormedField 𝕜] {E : Type u_2} [inst_1 : NormedAddCommGroup E]
  [inst_2 : NormedSpace 𝕜 E] {V W : E → E}, VectorField.lieBracket 𝕜 V W = VectorField.lieBracketWithin 𝕜 V W Set.univ