OAI/Geometry/RCD/Harmonic/AffineConstantBound.lean

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Recovering the constant operator of a centered affine residual

  1. theorem OAI.RegularPointCoordinates.LocalHarmonicL2MeanValueInput.affine_constant_operator_bound line 17

    Source documentation

    The published mean-value estimate recovers the constant coefficient operator because the same harmonic coordinate map vanishes at the center.

    theorem LocalHarmonicL2MeanValueInput.affine_constant_operator_bound
        {K : ℝ} {n : ℕ} {hX : NoncollapsedRCD K n X}
        (hinput : LocalHarmonicL2MeanValueInput hX) (hn : 2 ≤ n)
        {κ : ℝ} (hκ : 0 ≤ κ) :
        ∃ C : ℝ, 1 ≤ C ∧ ∀ (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) →
          ∀ η : SobolevSpace (hausdorff n X) hX.quadratic,
          (SobolevSpace.toLp (hausdorff n X) hX.quadratic η =ᵐ[
    …

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