∀ {M : Type u_1} {α : Type u_3} {E : Type u_4} [inst : MeasurableSpace α] [inst_1 : NormedAddCommGroup E]
  {μ : MeasureTheory.Measure α} {p : ENNReal} [inst_2 : SMul M α] [inst_3 : MeasureTheory.SMulInvariantMeasure M α μ]
  [inst_4 : MeasurableConstSMul M α] (c : Mᵈᵐᵃ) (f g : ↥(MeasureTheory.Lp E p μ)), c • (f + g) = c • f + c • g