OAI/Geometry/RCD/Sobolev/MeasureLaplacianUniqueness.lean

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Uniqueness of the full local measure Laplacian

  1. theorem OAI.RegularPointCoordinates.IsMeasureLaplacianOn.unique_restrict line 22

    Source documentation

    Local representatives have the same full Laplacian measure on every interior set with a compact cutoff. This includes singular parts.

    theorem IsMeasureLaplacianOn.unique_restrict {Ω S : Set X} (hΩ : MeasurableSet Ω)
        (hS : MeasurableSet S) {f g : SobolevSpace μ hQ} {ν τ : SignedMeasure X}
        (hf : IsMeasureLaplacianOn μ hQ Ω f ν) (hg : IsMeasureLaplacianOn μ hQ Ω g τ)
        (hfg : SobolevSpace.toLp μ hQ f =ᵐ[μ.restrict Ω] SobolevSpace.toLp μ hQ g)
        (χ : X →ᵇ ℝ) {L : ℝ≥0} (hχ : LipschitzWith L χ)
        (hχc : HasCompactSupport (χ : X → ℝ)) (hχΩ : tsupport χ ⊆ Ω)
        (hχ0 : ∀ x, 0≤χ x) (hχ1 : ∀ x ∈ S, χ x=1) :
        ν.restrict S=τ.restrict S := by
    …

    Mentions: OAI.RegularPointCoordinates.SobolevSpace, OAI.RegularPointCoordinates.IsMeasureLaplacianOn, OAI.RegularPointCoordinates.SobolevSpace.toLp