OAI/GroupTheory/PolycyclicRecognition/Geometry/CartanOverlapBound.lean

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Subexponential coordinate bounds for nonunique lifts

The small bounded displacement contributes a vanishing-height adjoint term. The overlap contributes the Cartan logarithm of d * b * e⁻¹. The finite Dynkin formula bounds their product in the nilpotent factor.

  1. theorem OAI.PolycyclicRecognition.CartanWordModel.exists_subexponential_overlap_difference_bound line 33