∀ {𝕜 : Type u_3} [hnorm : NontriviallyNormedField 𝕜] {E : Type u_2} [inst : AddCommGroup E] [inst_1 : Module 𝕜 E]
  [inst_2 : TopologicalSpace E] {F : Type u_1} [inst_3 : AddCommGroup F] [inst_4 : Module 𝕜 F]
  [inst_5 : TopologicalSpace F] (motive : Nonempty (E ≃L[𝕜] F) → Prop) (x : Nonempty (E ≃L[𝕜] F)),
  (∀ (h : E ≃L[𝕜] F), motive ⋯) → motive x