∀ {α : Type u_1} {β : Type u_2} {γ : Type u_3} {mα : MeasurableSpace α} [inst : MeasurableSpace β]
  [inst_1 : MeasurableSpace γ] {f : α → β} {g : β → γ}, MeasurableEmbedding g → (Measurable (g ∘ f) ↔ Measurable f)