OAI/GroupTheory/PolycyclicRecognition/Algebra/PairLabelFunctions.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

Continuous uniformly bounded label-distance observables

  1. theorem OAI.PolycyclicRecognition.continuous_pair_label_distance line 21

    Source documentation

    For each fixed scale the observable is continuous on the compact pair section.

    theorem continuous_pair_label_distance
        (π : G →* Multiplicative W) (hπ : Continuous fun g => (π g).toAdd)
        (g : G) (r : ℝ) (S : Set W) :
        Continuous (fun p : NormalizedPair G Λ => infDist (r⁻¹ • pairHeight π g p) S) :=
    …

    Mentions: OAI.PolycyclicRecognition.NormalizedPair, OAI.PolycyclicRecognition.pairHeight

  2. theorem OAI.PolycyclicRecognition.pair_label_distance_le line 30

    Source documentation

    Linear growth of the sampled group element gives a common bound at all scales at least one, using any fixed member of the comparison set.

    theorem pair_label_distance_le
        (π : G →* Multiplicative W)
        (hπ : LipschitzWith K (fun g => (π g).toAdd))
        {g : G} {r R : ℝ} (hr : 1 ≤ r) (_hR : 0 ≤ R) (hg : dist 1 g ≤ R * r)
        {S : Set W} {w : W} (hw : w ∈ S) (p : NormalizedPair G Λ) :
        infDist (r⁻¹ • pairHeight π g p) S ≤ (K : ℝ) * Λ * R + ‖w‖ := by
    …

    Mentions: OAI.PolycyclicRecognition.NormalizedPair, OAI.PolycyclicRecognition.pairHeight