∀ {E : Type u_2} [inst : NormedAddCommGroup E] [inst_1 : NormedSpace ℂ E] {V : Type u_3} [inst_2 : NormedAddCommGroup V]
  [inst_3 : InnerProductSpace ℝ V] [inst_4 : FiniteDimensional ℝ V] [inst_5 : MeasurableSpace V] [inst_6 : BorelSpace V]
  (f : SchwartzMap V E),
  FourierTransformInv.fourierInv f =
    (SchwartzMap.compCLMOfContinuousLinearEquiv ℂ (LinearIsometryEquiv.neg ℝ).toContinuousLinearEquiv)
      (FourierTransform.fourier f)