OAI/Geometry/RCD/Sobolev/UniformLipschitzL2Limit.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

Uniform Lipschitz bounds turn L² convergence into pointwise convergence

  1. theorem OAI.RegularPointCoordinates.tendsto_zero_of_uniform_lipschitz_l2 line 16

    Source documentation

    A fixed positive ball witnesses every persistent nonzero value.

    theorem tendsto_zero_of_uniform_lipschitz_l2 (μ : Measure X) [ProperSpace X]
        [IsFiniteMeasureOnCompacts μ] [μ.IsOpenPosMeasure]
        (u : ℕ → Lp ℝ 2 μ) (v : ℕ → X → ℝ) (L : ℝ≥0)
        (hrep : ∀ i, u i =ᵐ[μ] v i) (hLip : ∀ i, LipschitzWith L (v i))
        (hlim : Tendsto (fun i => ‖u i‖) atTop (𝓝 0)) (x : X) :
        Tendsto (fun i => v i x) atTop (𝓝 0) := by
    …
  2. theorem OAI.RegularPointCoordinates.NoncollapsedRCD.boundedHeat_tendsto_zero line 54

    Source documentation

    Uniformly bounded L² data tending to zero have heat values tending to zero at every point. The proof uses no kernel estimate.

    theorem boundedHeat_tendsto_zero (f : ℕ → Lp ℝ 2 (hausdorff n X)) (C : ℝ≥0)
        (hf : ∀ i, ∀ᵐ x ∂hausdorff n X, |f i x| ≤ C)
        (hlim : Tendsto f atTop (𝓝 0)) (t : ℝ) (ht : 0 < t) (x : X) :
        Tendsto (fun i => hX.boundedHeat hn p (f i) ⟨C, hf i⟩ t ht x) atTop (𝓝 0) := by
    …

    Mentions: OAI.RegularPointCoordinates.hausdorff