OAI/GroupTheory/PolycyclicRecognition/Analysis/SequenceCellProfilePairs.lean

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3 declarations, 0 contain sorry, 0 declared as axioms

Joint good sheets for two supported profile limits

The two profile approximations are imposed on the same Haar-cell subset. Their joint weak limit supplies its subexponential relative mass.

  1. theorem OAI.PolycyclicRecognition.exists_good_cell_profile_pairs_sequence line 20

    Source documentation

    A supported pair of profile limits gives a common good set in each original recurrence cell, with both uniform errors tending to zero.

    theorem exists_good_cell_profile_pairs_sequence
        {V W N : Type*} [TopologicalSpace V] [NormedAddCommGroup W] [MeasurableSpace N]
        (S : Set C(V, W)) [MeasurableSpace S] [BorelSpace S]
        [BorelSpace (S × S)] [HasOuterApproxClosed (S × S)]
        (K : Set V) (hK : IsCompact K)
        (scale : ℕ → ℝ) (hs : Tendsto scale atTop atTop)
        (μ : Measure N) (Q : ℕ → Set N) (hQ : ∀ n, MeasurableSet (Q n))
        (hQ0 : ∀ n, μ (Q n) ≠ 0) (hQfin : ∀ n, μ (Q n) ≠ ∞)
        (profile : ℕ → N → S × S) (hp : ∀ n, Measurable (profile n))
        (ν : ProbabilityMeasure (S × S))
        (hν : Tendsto (fun n => ProbabilityMeasure.map
          (cellProbabilityMeasure μ (Q n) (hQ0 n) (hQfin n)) (profile n)) atTop (𝓝 ν))
    …

    Mentions: OAI.PolycyclicRecognition.cellProbabilityMeasure

  2. theorem OAI.PolycyclicRecognition.exists_positive_good_cell_profile_pairs line 73

    Source documentation

    Retain only good scales once, before applying the coupled recurrence. Both the actual scales and their indices remain strictly increasing.

    theorem exists_positive_good_cell_profile_pairs
        {V W N : Type*} [TopologicalSpace V] [NormedAddCommGroup W] [MeasurableSpace N]
        (S : Set C(V, W)) [MeasurableSpace S] [BorelSpace S]
        [BorelSpace (S × S)] [HasOuterApproxClosed (S × S)]
        (K : Set V) (hK : IsCompact K)
        (scale : ℕ → ℝ) (hs : Tendsto scale atTop atTop)
        (μ : Measure N) (Q : ℕ → Set N) (hQ : ∀ n, MeasurableSet (Q n))
        (hQ0 : ∀ n, μ (Q n) ≠ 0) (hQfin : ∀ n, μ (Q n) ≠ ∞)
        (profile : ℕ → N → S × S) (hp : ∀ n, Measurable (profile n))
        (ν : ProbabilityMeasure (S × S))
        (hν : Tendsto (fun n => ProbabilityMeasure.map
          (cellProbabilityMeasure μ (Q n) (hQ0 n) (hQfin n)) (profile n)) atTop (𝓝 ν))
    …

    Mentions: OAI.PolycyclicRecognition.cellProbabilityMeasure

  3. theorem OAI.PolycyclicRecognition.exists_positive_eventually_good_cell_profile_pairs line 108

    Source documentation

    Replace the finitely many zero-measure good cells by their whole cells. The scale sequence is preserved, which keeps both already chosen polynomial limits and the chart selected by the geometric comparison unchanged.

    theorem exists_positive_eventually_good_cell_profile_pairs
        {V W N : Type*} [TopologicalSpace V] [NormedAddCommGroup W] [MeasurableSpace N]
        (S : Set C(V, W)) [MeasurableSpace S] [BorelSpace S]
        [BorelSpace (S × S)] [HasOuterApproxClosed (S × S)]
        (K : Set V) (hK : IsCompact K)
        (scale : ℕ → ℝ) (hs : Tendsto scale atTop atTop)
        (μ : Measure N) (Q : ℕ → Set N) (hQ : ∀ n, MeasurableSet (Q n))
        (hQ0 : ∀ n, μ (Q n) ≠ 0) (hQfin : ∀ n, μ (Q n) ≠ ∞)
        (profile : ℕ → N → S × S) (hp : ∀ n, Measurable (profile n))
        (ν : ProbabilityMeasure (S × S))
        (hν : Tendsto (fun n => ProbabilityMeasure.map
          (cellProbabilityMeasure μ (Q n) (hQ0 n) (hQfin n)) (profile n)) atTop (𝓝 ν))
    …

    Mentions: OAI.PolycyclicRecognition.cellProbabilityMeasure