OAI/Geometry/SurfaceImmersion/Correction/SmoothingGain.lean

GitHub source file

3 declarations, 0 contain sorry, 0 declared as axioms

Scale-exact derivative gains for convolution by the constructed kernels.

  1. lemma OAI.ClosedSurfaceR4.FiniteOrderSmoothing.norm_iterated_dilate line 13
  2. lemma OAI.ClosedSurfaceR4.FiniteOrderSmoothing.integral_norm_iterated_dilate line 26
  3. theorem OAI.ClosedSurfaceR4.FiniteOrderSmoothing.smooth_derivative_gain line 41

    Source documentation

    An arbitrarily high output derivative is bounded by the zeroth input norm and the corresponding fixed kernel derivative mass.

    theorem smooth_derivative_gain (r n : ℕ) {s C : ℝ} (hs : 0 < s)
        {f : Base → E} (hf : Continuous f) (hb : ∀ x, ‖f x‖ ≤ C) (x : Base) :
        ‖iteratedFDeriv ℝ n (smooth r s f) x‖ ≤
          (s ^ n)⁻¹ * (∫ y, ‖iteratedFDeriv ℝ n (kernel r) y‖) * C := by
    …

    Mentions: OAI.ClosedSurfaceR4.FiniteOrderSmoothing.smooth, OAI.ClosedSurfaceR4.FiniteOrderSmoothing.kernel