OAI/Geometry/RCD/Heat/BoundedHeatIntegral.lean

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Heat measure representation for all bounded L² data

  1. theorem OAI.RegularPointCoordinates.NoncollapsedRCD.heatRadonMeasure_integral_bounded line 22

    Source documentation

    Uniform compact approximation and absolute continuity extend the constructed measure representation to every bounded L² datum.

    theorem heatRadonMeasure_integral_bounded (t : ℝ) (ht : 0 < t) (x : X)
        (f : Lp ℝ 2 (hausdorff n X)) (C : ℝ≥0)
        (hf : ∀ᵐ y ∂hausdorff n X, |f y| ≤ C) :
        (∫ y, f y ∂hX.heatRadonMeasure hn p t ht x) = hX.boundedHeat hn p f ⟨C, hf⟩ t ht x := by
    …

    Mentions: OAI.RegularPointCoordinates.hausdorff

  2. theorem OAI.RegularPointCoordinates.NoncollapsedRCD.heatRadonDensity_integral_bounded line 61

    Source documentation

    The actual probability density represents all bounded L² heat data.

    theorem heatRadonDensity_integral_bounded (t : ℝ) (ht : 0 < t) (x : X)
        (f : Lp ℝ 2 (hausdorff n X)) (C : ℝ≥0)
        (hf : ∀ᵐ y ∂hausdorff n X, |f y| ≤ C) :
        (∫ y, hX.heatRadonDensity hn p t ht x y * f y ∂hausdorff n X) =
          hX.boundedHeat hn p f ⟨C, hf⟩ t ht x := by
    …

    Mentions: OAI.RegularPointCoordinates.hausdorff