OAI/Geometry/RCD/Harmonic/ScaledHarmonicAffine.lean

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Radius-weighted affine coefficients in centered harmonic coordinates

  1. theorem OAI.RegularPointCoordinates.scaled_harmonic_affine_nondegeneracy line 18

    Source documentation

    Weighting the exact-frame coefficient by the physical radius gives one affine nondegeneracy constant at every positive scale. The constant coefficient retains its unweighted normalization.

    theorem scaled_harmonic_affine_nondegeneracy {K : ℝ} {n : ℕ} {hX : NoncollapsedRCD K n X}
        (hgradient : LocalHarmonicL2GradientInput hX) (hmean : LocalHarmonicL2MeanValueInput hX)
        (hn : 2 ≤ n) {κ : ℝ} (hκ : 0 ≤ κ) :
        ∃ Cg Cm : ℝ, 1 ≤ Cg ∧ 1 ≤ Cm ∧
          ∀ (p : X) (R : ℝ), 0 < R → -κ ≤ K * R ^ 2 →
          ∀ (u : Fin n → SobolevSpace (hausdorff n X) hX.quadratic) (V : X → Euclidean n),
          (∀ j, IsSobolevHarmonicOn (hausdorff n X) hX.quadratic (ball p R) (u j)) →
          ContinuousOn V (ball p R) → V p = 0 →
          (∀ j, SobolevSpace.toLp (hausdorff n X) hX.quadratic (u j) =ᵐ[
            (hausdorff n X).restrict (ball p R)] fun x => V x j) →
          ∀ (N : Euclidean n ≃L[ℝ] Euclidean n),
          IsExactMeanNormalization (hausdorff n X) hX.quadratic
    …

    Mentions: OAI.RegularPointCoordinates.NoncollapsedRCD, OAI.RegularPointCoordinates.LocalHarmonicL2GradientInput, OAI.RegularPointCoordinates.LocalHarmonicL2MeanValueInput, OAI.RegularPointCoordinates.SobolevSpace, OAI.RegularPointCoordinates.hausdorff, OAI.RegularPointCoordinates.Euclidean, OAI.RegularPointCoordinates.IsSobolevHarmonicOn, OAI.RegularPointCoordinates.SobolevSpace.toLp, OAI.RegularPointCoordinates.IsExactMeanNormalization