OAI/GroupTheory/PolycyclicRecognition/Analysis/ProbePivotBridge.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

Exact cancellation for the source bridge at its Cartan pivot

  1. theorem OAI.PolycyclicRecognition.probe_pivot_bridge_identity line 12
  2. theorem OAI.PolycyclicRecognition.probe_pivot_bridge_distance line 29

    Source documentation

    The common ideal probe and basepoint disappear from the bridge length.

    theorem probe_pivot_bridge_distance
        (φ : D →* MulAut N) (ι : N →* G) (κ : D →* G)
        (hc : ∀ d n, ι (φ d n) = κ d * ι n * (κ d)⁻¹)
        (S : MulAut N) (n i s k : N) (d : D) (x : G) :
        dist (x * (ι (coneProbeFirst S n i s) * κ d))
          (x * (ι (coneProbeSecond S n i k) * κ d)) =
            dist 1 (ι (φ d⁻¹ (S (s⁻¹ * k)))) := by
    …

    Mentions: OAI.PolycyclicRecognition.coneProbeFirst, OAI.PolycyclicRecognition.coneProbeSecond