∀ {X : Type u_1} [inst : TopologicalSpace X] [inst_1 : T2Space X] [inst_2 : LocallyCompactSpace X]
  [inst_3 : MeasurableSpace X] [inst_4 : BorelSpace X] (Λ : CompactlySupportedContinuousMap X NNReal →ₗ[NNReal] NNReal)
  (f : CompactlySupportedContinuousMap X NNReal), ∫ (x : X), ↑(f x) ∂NNRealRMK.rieszMeasure Λ = ↑(Λ f)