∀ {α : Type u_1} {E : Type u_2} {m : MeasurableSpace α} {p : ENNReal} {μ : MeasureTheory.Measure α}
  [inst : NormedAddCommGroup E] {β : Type u_3} [inst_1 : MeasurableSpace β] {μb : MeasureTheory.Measure β} (f : α → β)
  (hf : MeasureTheory.MeasurePreserving f μ μb),
  ⟨(↑0).compMeasurePreserving f hf, ⋯⟩ = ⟨(↑0).compMeasurePreserving f hf, ⋯⟩