∀ {α : Type u_1} {E : Type u_2} {m : MeasurableSpace α} {p : ENNReal} {μ : MeasureTheory.Measure α}
  [inst : NormedAddCommGroup E],
  p ≠ ⊤ → ∀ {f : α → E} (c : NNReal), MeasureTheory.lpNorm f p (c • μ) = c ^ p.toReal⁻¹ • MeasureTheory.lpNorm f p μ