∀ {Ω : Type u_1} {m : MeasurableSpace Ω} {X : Ω → ℝ} {μ : MeasureTheory.Measure Ω} {t v : ℝ},
  MeasureTheory.Integrable (fun ω => Real.exp ((v + t) * X ω)) μ →
    MeasureTheory.Integrable (fun ω => Real.exp ((v - t) * X ω)) μ →
      MeasureTheory.Integrable (fun ω => Real.exp (t * |X ω| + v * X ω)) μ