OAI/GroupTheory/PolycyclicRecognition/Analysis/AnchoredTilePacking.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

Packing tiles whose factor lifts use different anchors

Endpoint sets stay in the common ambient frame. Each tile may choose its own left-translated factor coordinates without changing its cardinality or the separation constant.

  1. theorem OAI.PolycyclicRecognition.factor_anchored_card_le_product_volume line 22
  2. theorem OAI.PolycyclicRecognition.sequence_anchored_tile_separated_count line 62

    Source documentation

    Common per-tile bounds in independently translated factor frames.

    theorem sequence_anchored_tile_separated_count
        (φ : D →* MulAut N) (ι : N →* G) (κ : D →* G)
        (hc : ∀ d n, ι (φ d n) = κ d * ι n * (κ d)⁻¹)
        (μ : Measure N) (ν : Measure D) [μ.IsMulLeftInvariant] [ν.IsMulLeftInvariant]
        [SFinite μ] [SFinite ν] (hφ : ∀ d, MeasurePreserving (φ d) μ μ)
        (scale : ℕ → ℝ) (hscale : Tendsto scale atTop atTop)
        (tiles : ℕ → ℕ) (s : ∀ n, Fin (tiles n) → Finset G)
        (anchor : ∀ n, Fin (tiles n) → G)
        (p : ∀ n, Fin (tiles n) → G → N × D)
        (E : ∀ n, Fin (tiles n) → Set N) (B : ℕ → Set D)
        (U : Set (N × D)) (hU : MeasurableSet U)
        (hU0 : (μ.prod ν) U ≠ 0) (hUtop : (μ.prod ν) U ≠ ⊤)
    …