OAI/GroupTheory/PolycyclicRecognition/Algebra/FactorOccupationLimit.lean

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Combining the two actual factor estimates for occupation limits

  1. theorem OAI.PolycyclicRecognition.invariant_of_weak_factor_occupation_limit line 14

    Source documentation

    Separate right-translation estimates in the two factors suffice for full invariance. Factorizations may be nonunique.

    theorem invariant_of_weak_factor_occupation_limit
        {G X ι : Type*} [Group G] [MetricSpace X] [CompactSpace X]
        [MeasurableSpace X] [BorelSpace X] [SecondCountableTopology X]
        [MulAction G X] [ContinuousConstSMul G X]
        (N D : Subgroup G)
        (hgen : ∀ g : G, ∃ n : N, ∃ d : D, g = (n : G) * d)
        {l : Filter ι} [l.NeBot]
        (μs : ι → ProbabilityMeasure X) (μ : ProbabilityMeasure X)
        (hlim : Tendsto μs l (𝓝 μ))
        (hN : ∀ (n : N) (f : C(X, ℝ)), Tendsto
          (fun i => (∫ x, f ((n : G) • x) ∂(μs i : Measure X)) -
            ∫ x, f x ∂(μs i : Measure X)) l (𝓝 0))
    …