Theorems · Theorem · functional analysis

SchwartzMap.fourier_lineDerivOp_eq

∀ {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) (m : V),
  FourierTransform.fourier (LineDeriv.lineDerivOp m f) =
    (2 * ↑Real.pi * Complex.I) • (SchwartzMap.smulLeftCLM E fun x => inner ℝ x m) (FourierTransform.fourier f)

The Fourier transform of line derivative in direction m is given by multiplication of (2 * π * Complex.I) • (inner ℝ · m) with the Fourier transform.

Defined in

Mathlib.Analysis.Distribution.SchwartzSpace.Fourier

Cited by

3 results in Mathlib

Foundations

Depth 299 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

NormedAddCommGroupNormedSpaceNormedAddCommGroupInnerProductSpaceFiniteDimensionalMeasurableSpaceBorelSpace