OAI/Geometry/RCD/Coordinates/FramedRadialSmallness.lean

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Qualitative radial error in the original coordinate frame

  1. theorem OAI.RegularPointCoordinates.DyadicDistanceReplacements.framed_covector_fit_smallness line 19

    Source documentation

    Normalizing and centering are used only to estimate the error. The result is the actual affine-fit error for the original map and covector.

    theorem DyadicDistanceReplacements.framed_covector_fit_smallness
        {n : ℕ} {κ r0 B J C : ℝ} {p : X} {S : DyadicDistanceSources μ hQ n κ p r0}
        (T : DyadicDistanceReplacements μ hQ S B J C) (i : ℕ)
        {ε Cχ : ℝ} (hε : 0 ≤ ε) (hε1 : ε ≤ 1) (hCχ : 0 ≤ Cχ)
        (u : Fin n → SobolevSpace μ hQ) (A : Euclidean n ≃L[ℝ] Euclidean n)
        (v : X → Euclidean n)
        (hfirst : FirstOrderSplittingOn μ hQ p (4 * (distanceSourceRadius r0 i / 64)) ε
          (transformedColumn μ hQ u A) v)
        (hmetric : IsPointedApproximation p 0 (distanceSourceRadius r0 i / 64) 4 ε
          (fun x => (distanceSourceRadius r0 i / 64)⁻¹ • (v x - v p)))
        (η : SobolevSpace μ hQ)
        (hη : SobolevSpace.toLp μ hQ η =ᵐ[μ.restrict (ball p (4 * (distanceSourceRadius r0 i / 64)))]
    …

    Mentions: OAI.RegularPointCoordinates.DyadicDistanceSources, OAI.RegularPointCoordinates.DyadicDistanceReplacements, OAI.RegularPointCoordinates.SobolevSpace, OAI.RegularPointCoordinates.Euclidean, OAI.RegularPointCoordinates.FirstOrderSplittingOn, OAI.RegularPointCoordinates.distanceSourceRadius, OAI.RegularPointCoordinates.transformedColumn, OAI.RegularPointCoordinates.IsPointedApproximation, OAI.RegularPointCoordinates.SobolevSpace.toLp