∀ {α : Type u_1} {m0 : MeasurableSpace α} {p : ENNReal} {μ : MeasureTheory.Measure α} {ε : Type u_7}
  [inst : TopologicalSpace ε] [inst_1 : ContinuousENorm ε] {β : Type u_8} {mβ : MeasurableSpace β} {f : α → β}
  {g : β → ε} {ν : MeasureTheory.Measure β},
  MeasureTheory.MemLp g p ν → MeasureTheory.MeasurePreserving f μ ν → MeasureTheory.MemLp (g ∘ f) p μ