∀ {E : Type u_3} [inst : NormedAddCommGroup E] [inst_1 : NormedSpace ℝ E] (Ω : TopologicalSpace.Opens E) (F : Type u_4)
  [inst_2 : NormedAddCommGroup F] [inst_3 : NormedSpace ℝ F] (n : ℕ∞),
  TestFunction.originalTop Ω F n =
    ⨆ K,
      ⨆ (K_sub_Ω : ↑K ⊆ ↑Ω),
        TopologicalSpace.coinduced (TestFunction.ofSupportedIn K_sub_Ω) ContDiffMapSupportedIn.topologicalSpace