∀ {𝕜 : Type u_1} [inst : NontriviallyNormedField 𝕜] {E : Type u_2} [inst_1 : NormedAddCommGroup E]
  [inst_2 : NormedSpace 𝕜 E] {F : Type u_3} [inst_3 : NormedAddCommGroup F] [inst_4 : NormedSpace 𝕜 F] {f : E → F}
  {x : E},
  ContDiffAt 𝕜 ⊤ f x →
    ∀ {n : ℕ} (σ : Equiv.Perm (Fin n)),
      ContinuousMultilinearMap.domDomCongr σ (iteratedFDeriv 𝕜 n f x) = iteratedFDeriv 𝕜 n f x