OAI/Geometry/RCD/Sobolev/GammaL2Stability.lean

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Strong L² stability of bounded-gradient energy densities

  1. theorem OAI.RegularPointCoordinates.gammaL2_sub_norm_le line 15
  2. theorem OAI.RegularPointCoordinates.gammaL2_tendsto line 35

    Source documentation

    Strong Sobolev convergence and a common gradient bound give strong L² convergence of the actual energy densities.

    theorem gammaL2_tendsto {u : ℕ → SobolevSpace μ hQ} {f : SobolevSpace μ hQ}
        (L : ℝ≥0)
        (hu : ∀ k, ∀ᵐ x ∂μ, SobolevSpace.minimalSlope μ hQ (u k) x ≤ L)
        (hf : ∀ᵐ x ∂μ, SobolevSpace.minimalSlope μ hQ f x ≤ L)
        (hconv : Tendsto u atTop (𝓝 f)) :
        Tendsto (fun k => (localGamma_memLp_of_bounded_gradient μ hQ (u k) (u k) L (hu k)).toLp
          (localGamma μ hQ (u k) (u k))) atTop
          (𝓝 ((localGamma_memLp_of_bounded_gradient μ hQ f f L hf).toLp (localGamma μ hQ f f))) := by
    …

    Mentions: OAI.RegularPointCoordinates.SobolevSpace, OAI.RegularPointCoordinates.SobolevSpace.minimalSlope, OAI.RegularPointCoordinates.localGamma_memLp_of_bounded_gradient, OAI.RegularPointCoordinates.localGamma