OAI/Geometry/RCD/Heat/DyadicHeatMeanComparison.lean

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Uniform comparison along one fixed-root dyadic family

  1. theorem OAI.RegularPointCoordinates.dyadic_heat_mean_comparison line 20

    Source documentation

    A single fixed coordinate map and its exact dyadic normalizers give uniform heat comparisons at all sufficiently fine scales. The outer normalizer is used only for the working-frame calculation.

    theorem dyadic_heat_mean_comparison {K : ℝ} (m : ℕ)
        (hX : NoncollapsedRCD K (m + 1) X) [(hausdorff (m + 1) X).Regular]
        {a : ℝ} (ha : 0 ≤ a)
        (hBG : BallVolumeComparison (hausdorff (m + 1) X) (comparisonModelVolume m a))
        {ker : ℝ → X → X → ℝ}
        (hk : IsContinuousHeatKernel (hausdorff (m + 1) X) hX.quadratic ker)
        (hg : HasCoordinateHeatBounds (hausdorff (m + 1) X) ker)
        {L B V Vlo η : ℝ} (hL : 0 ≤ L) (hB : 0 ≤ B) (hV : 0 ≤ V) (hVlo : 0 < Vlo)
        (lambda : ℝ) (hη : 0 < η) :
        ∃ N : ℕ, ∃ ε : ℝ, 0 < ε ∧
          ∀ (R : ℝ), 0 < R → R ≤ 1 → a * (3 * R) ≤ 1 →
          ∀ (u : Fin (m + 1) → SobolevSpace (hausdorff (m + 1) X) hX.quadratic) (p : X)
    …

    Mentions: OAI.RegularPointCoordinates.NoncollapsedRCD, OAI.RegularPointCoordinates.hausdorff, OAI.RegularPointCoordinates.BallVolumeComparison, OAI.RegularPointCoordinates.comparisonModelVolume, OAI.RegularPointCoordinates.IsContinuousHeatKernel, OAI.RegularPointCoordinates.HasCoordinateHeatBounds, OAI.RegularPointCoordinates.SobolevSpace