no goals
α : Type u_1
β : Type u_2
γ : Type u_3
δ : Type ?u.449609
inst✝³ : MeasurableSpace α
μ ν : Measure α
inst✝² : TopologicalSpace β
inst✝¹ : TopologicalSpace γ
inst✝ : TopologicalSpace δ
r : β → γ → Prop
f : α →ₘ[μ] β
g : α →ₘ[μ] γ
⊢ LiftRel r f g ↔ ∀ᵐ (a : α) ∂μ, r (↑f a) (↑g a)
rw [← liftRel_mk_mk, mk_coeFn, mk_coeFn]