∀ {α : Type u_1} {β : Type u_2} {γ : Type u_3} [inst : MeasurableSpace α] {μ : MeasureTheory.Measure α}
  [inst_1 : TopologicalSpace β] [inst_2 : TopologicalSpace γ] (f : α → β) (hf : MeasureTheory.AEStronglyMeasurable f μ)
  (g : α → γ) (hg : MeasureTheory.AEStronglyMeasurable g μ),
  MeasureTheory.AEEqFun.mk (fun x => (f x, g x)) ⋯ =
    (MeasureTheory.AEEqFun.mk f hf).pair (MeasureTheory.AEEqFun.mk g hg)