∀ {μ : ℝ} {v : NNReal} {Ω : Type u_1} {mΩ : MeasurableSpace Ω} {P : MeasureTheory.Measure Ω} {X : Ω → ℝ},
  ProbabilityTheory.HasLaw X (ProbabilityTheory.gaussianReal μ v) P →
    ∀ (y : ℝ), ProbabilityTheory.HasLaw (fun ω => X ω - y) (ProbabilityTheory.gaussianReal (μ - y) v) P