OAI/Geometry/RCD/Sobolev/HessianDensityMassBound.lean

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3 declarations, 0 contain sorry, 0 declared as axioms

Weighted Hessian bounds retaining the full positive mass

  1. theorem OAI.RegularPointCoordinates.abs_le_factor_one_add_density line 12

    Source documentation

    A deliberately linear density bound, convenient for Gaussian tails.

    theorem abs_le_factor_one_add_density {h j b : ℝ} (hj : 0 ≤ j) (hb : 0 ≤ b)
        (hh : h^2 ≤ j*b^2) : |h| ≤ b*(1+j) := by
    …
  2. theorem OAI.RegularPointCoordinates.weighted_abs_le_one_add_density line 21

    Source documentation

    The weighted mixed estimate uses only the product of the two energies.

    theorem weighted_abs_le_one_add_density {w h j e f b : ℝ}
        (hw : 0 ≤ w) (hj : 0 ≤ j) (hb : 0 ≤ b)
        (hh : h^2 ≤ j*e*f) (he : w^2*e*f ≤ b^2) :
        w*|h| ≤ b*(1+j) := by
    …
  3. theorem OAI.RegularPointCoordinates.integral_abs_le_full_mass line 35

    Source documentation

    A pointwise density estimate integrates against the complete mass, including any singular part of the Bochner measure.

    theorem integral_abs_le_full_mass (σ : Measure X) [IsFiniteMeasure σ]
        {S : Set X} (hS : μ S ≠ ⊤) {H : X → ℝ}
        (hH : AEStronglyMeasurable H (μ.restrict S)) {B : ℝ} (hB : 0 ≤ B)
        (hb : ∀ᵐ x ∂μ.restrict S, |H x| ≤ B*(1+(σ.rnDeriv μ x).toReal)) :
        Integrable H (μ.restrict S) ∧
          (∫ x in S, |H x| ∂μ) ≤ B*(μ.real S+σ.real S) := by
    …