OAI/GroupTheory/PolycyclicRecognition/Analysis/ConeProbeIntrinsicTiles.lean

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4 declarations, 0 contain sorry, 0 declared as axioms

Intrinsic ideal increments of the three actual probe sheets

  1. theorem OAI.PolycyclicRecognition.intrinsic_probe_inverse_flow line 16

    Source documentation

    The intrinsic inverse flow is precisely conjugation back by the normalized neighbor step.

    theorem intrinsic_probe_inverse_flow (ι : I →* N) (φ : MulAut I) (k : N)
        (hφ : ∀ z, ι (φ z) = k * ι z * k⁻¹) (i : I) :
        k⁻¹ * ι i * k = ι (φ.symm i) := by
    …
  2. theorem OAI.PolycyclicRecognition.intrinsic_probe_tile_mem line 26

    Source documentation

    The tile covering gives an actual small ideal coordinate, without choosing a second preimage of a point under the ambient inclusion.

    theorem intrinsic_probe_tile_mem (φ : MulAut I) (a i : I) (B : Set I)
        (hi : i ∈ a • (φ '' B)) : φ.symm (a⁻¹ * i) ∈ B := by
    …
  3. theorem OAI.PolycyclicRecognition.coneProbe_intrinsic_anchor_increment line 35

    Source documentation

    The anchor chain starts at the second original sheet and uses the reverse-flow anchor controlled by the larger template.

    theorem coneProbe_intrinsic_anchor_increment
        (ι : I →* N) (φ : MulAut I) (k : N)
        (hφ : ∀ z, ι (φ z) = k * ι z * k⁻¹)
        (S : MulAut N) (n : N) (a : I) :
        (n * S k)⁻¹ * coneProbeSecond S n (ι a) k = S (ι (φ.symm a)) := by
    …

    Mentions: OAI.PolycyclicRecognition.coneProbeSecond

  4. theorem OAI.PolycyclicRecognition.coneProbe_intrinsic_tile_increment line 44

    Source documentation

    The within-tile chain has the intrinsic ideal coordinate supplied by that same tile; it keeps the actual endpoint being counted.

    theorem coneProbe_intrinsic_tile_increment
        (ι : I →* N) (φ : MulAut I) (k : N)
        (hφ : ∀ z, ι (φ z) = k * ι z * k⁻¹)
        (S : MulAut N) (n : N) (a i : I) :
        (coneProbeSecond S n (ι a) k)⁻¹ * coneProbeSecond S n (ι i) k =
          S (ι (φ.symm (a⁻¹ * i))) := by
    …

    Mentions: OAI.PolycyclicRecognition.coneProbeSecond