OAI/Geometry/RCD/Sobolev/CutoffProductEnergy.lean

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Energy of a Lipschitz cutoff times an arbitrary Sobolev function

  1. theorem OAI.RegularPointCoordinates.energy_cutoffCLM_le line 18

    Source documentation

    The usual two-term product energy bound, with no boundedness hypothesis on the Sobolev factor.

    theorem energy_cutoffCLM_le (u η : SobolevSpace μ hQ)
        {v : X → ℝ} {L B A : ℝ≥0} (hv : LipschitzWith L v)
        (hs : HasCompactSupport v) (hb : ∀ x, |v x| ≤ B) (hn : ∀ x, 0 ≤ v x)
        (hrep : SobolevSpace.toLp μ hQ η =ᵐ[μ] v)
        (hgrad : ∀ᵐ x ∂μ, |SobolevSpace.minimalSlope μ hQ η x| ≤ A) :
        let z := SobolevSpace.cutoffCLM μ hQ hv hs hb hn u
    …

    Mentions: OAI.RegularPointCoordinates.SobolevSpace, OAI.RegularPointCoordinates.SobolevSpace.toLp, OAI.RegularPointCoordinates.SobolevSpace.minimalSlope, OAI.RegularPointCoordinates.SobolevSpace.cutoffCLM