OAI/Geometry/RCD/Sobolev/LipschitzCompactSubsequence.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

Uniform compactness of transferred Lipschitz data

  1. theorem OAI.RegularPointCoordinates.exists_uniform_lipschitz_subsequence line 15
  2. theorem OAI.RegularPointCoordinates.exists_lipschitz_subsequence_on_compact line 43

    Source documentation

    On a fixed compact region, the limit retains a global Lipschitz extension.

    theorem exists_lipschitz_subsequence_on_compact {Z : Type*} [MetricSpace Z]
        {s : Set Z} (hs : IsCompact s) (f : ℕ → Z → ℝ) (L : ℝ≥0) (A : ℝ)
        (hl : ∀ k, LipschitzWith L (f k)) (hb : ∀ k z, z∈s → |f k z|≤A) :
        ∃ (g : Z → ℝ) (a : ℕ → ℕ), StrictMono a ∧ LipschitzWith L g ∧
          (∀ z∈s, |g z|≤A) ∧
          ∀ ε : ℝ, 0<ε → ∀ᶠ k in atTop, ∀ z∈s, |f (a k) z-g z|<ε := by
    …