OAI/GroupTheory/PolycyclicRecognition/Geometry/CartanLogRegionVolume.lean

GitHub source file

1 declarations, 0 contain sorry, 0 declared as axioms

The Cartan log restriction has subexponential Haar volume

  1. theorem OAI.PolycyclicRecognition.cartan_log_regions_volume line 24

    Source documentation

    The coordinate restriction produced by the actual path lifts is an exponential box. Its volume is finite and subexponential in any Haar normalization, with no separate volume hypothesis.

    theorem cartan_log_regions_volume
        (haar : NilpotentExponentialHaarInput E D)
        (Exp : GroupLieAlgebra (𝓘(ℝ, E)) D → D) (hExp : IsGroupExponential Exp)
        (e : H ≃ₗ⁅ℝ⁆ GroupLieAlgebra (𝓘(ℝ, E)) D) (hbij : Function.Bijective Exp)
        (μ : Measure D) [μ.IsHaarMeasure]
        (scale R : ℕ → ℝ) (hs : Tendsto scale atTop atTop)
        (hR0 : ∀ n, 0 ≤ R n) (hR : HasSubexponentialUpperBoundSeq scale R) :
        let B := fun n => {d : D | ‖(finBasis ℝ H).equivFun (cartanLog H e Exp hbij d)‖ ≤ R n}
    …

    Mentions: OAI.PolycyclicRecognition.NilpotentExponentialHaarInput, OAI.PolycyclicRecognition.HasSubexponentialUpperBoundSeq, OAI.PolycyclicRecognition.cartanLog