def MeasureTheory.Lorentz {α : Type u_1} {ε : Type u_2} (p q : ENNReal) {m0 : MeasurableSpace α} (μ : Measure α) [SigmaFinite μ] [TopologicalSpace ε] [ESeminormedAddMonoid ε] [ContinuousAdd ε] :
AddSubmonoid (α →ₘ[μ] ε)
TODO: basic results
TODO: basic results