OAI/Geometry/RCD/Transport/RenyiGlobalVariation.lean

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Noncompact Rényi first variation by integrable path truncation

  1. theorem OAI.RegularPointCoordinates.renyi_core_signed_variation line 18

    Source documentation

    Ordinary integrability of the explicit path majorant and weighted energy density suffices to remove all path truncations. No finite-volume or global positive lower bound is imposed on the density.

    theorem renyi_core_signed_variation
        (π : Measure C(Time,X)) [IsFiniteMeasure π]
        (hgeo : ∀ᵐ γ ∂π, IsGeodesic γ) {C : ℝ≥0∞} (hC : C≠∞)
        (hcomp : ∀ t : Time, π.map (fun γ => γ t)≤C • μ)
        (hD : MemLp (fun γ : C(Time,X) => dist (γ 0) (γ 1)) 2 π)
        (u ρ : SobolevSpace μ hQ)
        (hp : ∀ᵐ x ∂μ, 0<SobolevSpace.toLp μ hQ ρ x)
        {g : X → ℝ} {L : ℝ≥0} (hg : LipschitzWith L g)
        (hlog : (fun x => Real.log (SobolevSpace.toLp μ hQ ρ x)) =ᵐ[μ] g)
        (h0 : π.map (fun γ => γ 0)=μ.withDensity
          (fun x => ENNReal.ofReal (SobolevSpace.toLp μ hQ ρ x)))
        {φ ψ : X → ℝ} (hu : φ=ᵐ[μ] SobolevSpace.toLp μ hQ u)
    …

    Mentions: OAI.RegularPointCoordinates.Time, OAI.RegularPointCoordinates.IsGeodesic, OAI.RegularPointCoordinates.SobolevSpace, OAI.RegularPointCoordinates.SobolevSpace.toLp