OAI/GroupTheory/PolycyclicRecognition/Geometry/BoundaryVolumeAveraging.lean

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Averaging the constructed boundary volume comparison

  1. theorem OAI.PolycyclicRecognition.BoundaryVolumeComparison.averaged_trace line 27

    Source documentation

    No metric or doubling condition on the boundary is assumed: the existing published metric input and nilpotent exponential inputs supply them.

    theorem BoundaryVolumeComparison.averaged_trace [SFinite C.targetMeasure]
        (metricInput : GeodesicMetricExistenceInput)
        (dynkin : NilpotentDynkinExpansionInput ES S)
        (haar : NilpotentExponentialHaarInput ES S)
        (Exp : GroupLieAlgebra (𝓘(ℝ, ES)) S → S) (hExp : IsGroupExponential Exp)
        (hnil : LieRing.IsNilpotent (GroupLieAlgebra (𝓘(ℝ, ES)) S))
        (hcont : ∀ x, Continuous (actS x))
        (ι : N →* G) (π : N →* S) (hπ : Function.Surjective π)
        (hact : ∀ n x, actS (ι n) x = π n * x)
        (d : D → G) {L : ℝ}
        (hleaf : ∀ p n j,
          |C.targetRate * ιT (height (f p (Κ n * d j))).toAdd -
    …

    Mentions: OAI.PolycyclicRecognition.GeodesicMetricExistenceInput, OAI.PolycyclicRecognition.NilpotentDynkinExpansionInput, OAI.PolycyclicRecognition.NilpotentExponentialHaarInput