OAI/GroupTheory/PolycyclicRecognition/Geometry/RescaledFlowLipschitz.lean

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Coarse one-parameter bounds give Lipschitz limiting profiles

  1. theorem OAI.PolycyclicRecognition.rescaled_profile_flow_dist_le line 15
  2. theorem OAI.PolycyclicRecognition.lipschitz_supported_rescaled_flow line 51

    Source documentation

    All supported weak limits of the actual rescaled profiles are Lipschitz along the graded flow. The constant is independent of the base point and of the supported profile.

    theorem lipschitz_supported_rescaled_flow
        {L D G W A : Type*} [LieRing L] [LieAlgebra ℝ L] [Group D]
        [Group G] [PseudoMetricSpace G] [IsIsometricSMul G G]
        [NormedAddCommGroup W] [NormedSpace ℝ W] [MeasurableSpace A]
        {n c : ℕ} (Exp : L → D) (κ : D →* G) (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)
        (a : DynkinCoefficients c 2)
        (hm : ∀ x y, Exp (finiteDynkinPolynomial a ![x, y]) = Exp x * Exp y)
        (v : L) (hv : ∀ j, b.repr v j ≠ 0 → 1 ≤ cost j)
        (hd : Continuous (fun t : ℝ => κ (Exp (t • v))))
        (hd0 : κ (Exp ((0 : ℝ) • v)) = 1)
    …

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