∀ {α : Type u_1} [inst : UniformSpace α] {s t : SetRel α α} (f g : CauchyFilter α)
  (motive : (f, g) ∈ (CauchyFilter.gen s).comp (CauchyFilter.gen t) → Prop)
  (x : (f, g) ∈ (CauchyFilter.gen s).comp (CauchyFilter.gen t)),
  (∀ (h : CauchyFilter α) (h₁ : (f, h) ∈ CauchyFilter.gen s) (h₂ : (h, g) ∈ CauchyFilter.gen t), motive ⋯) → motive x