OAI/GroupTheory/PolycyclicRecognition/Analysis/AllScaleProfileEquicontinuity.lean

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Equicontinuity before choosing a sequence of scales

  1. theorem OAI.PolycyclicRecognition.continuous_scaled_basis_coordinates line 14
  2. theorem OAI.PolycyclicRecognition.continuous_mapped_scaled_basis_coordinates line 27
  3. theorem OAI.PolycyclicRecognition.equicontinuous_all_scale_profiles line 43

    Source documentation

    Uniformity of the actual metric error over all nonnegative real scales. Compact initial scale intervals and the asymptotic chart estimate give a single modulus, independent of the eventual sequence.

    theorem equicontinuous_all_scale_profiles
        {L G W P : Type*} [LieRing L] [LieAlgebra ℝ L]
        [Group G] [PseudoMetricSpace G] [IsIsometricSMul G G]
        [NormedAddCommGroup W] [NormedSpace ℝ W] {n c : ℕ}
        (b : Basis (Fin n) ℝ L) (cost : Fin n → ℝ)
        (hweight : ∀ i j k, b.repr ⁅b i, b j⁆ k ≠ 0 → cost i + cost j ≤ cost k)
        (Exp : L → G) (hinj : Function.Injective Exp) (hzero : Exp 0 = 1)
        (hneg : ∀ x, Exp (-x) = (Exp x)⁻¹)
        (hadd : ∀ x (s t : ℝ), Exp ((s + t) • x) = Exp (s • x) * Exp (t • x))
        (a : DynkinCoefficients c 2)
        (hm : ∀ x y, Exp (finiteDynkinPolynomial a ![x, y]) = Exp x * Exp y)
        {C : ℝ} (hC : 0 ≤ C)
    …

    Mentions: OAI.PolycyclicRecognition.DynkinCoefficients, OAI.PolycyclicRecognition.finiteDynkinPolynomial