OAI/Geometry/RCD/Harmonic/EuclideanHarmonicL1.lean

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L¹ mass of normalized compact harmonic extensions

  1. theorem OAI.RegularPointCoordinates.EuclideanHarmonicModel.extension_l1_le line 16

    Source documentation

    The normalized L² bound controls the entire L¹ mass of any compact extension dominated by the model.

    theorem EuclideanHarmonicModel.extension_l1_le {n : ℕ} {S : ℝ}
        (w : EuclideanHarmonicModel n S) (hS : 0 < S)
        {F : Euclidean n → ℝ} (hF : Continuous F) (hfs : HasCompactSupport F)
        (hs : tsupport F ⊆ ball 0 S) (hb : ∀ x, |F x| ≤ |w.value x|) :
        (∫ x, |F x|) ≤ volume.real (ball (0 : Euclidean n) S) := by
    …

    Mentions: OAI.RegularPointCoordinates.EuclideanHarmonicModel, OAI.RegularPointCoordinates.Euclidean