OAI/GroupTheory/PolycyclicRecognition/Algebra/NilpotentAutomorphismAction.lean

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Integrating a continuous action on a nilpotent Lie algebra

The group laws follow by checking the global exponential coordinates. Those same coordinates give joint continuity, rather than merely continuity of each automorphism separately.

  1. theorem OAI.PolycyclicRecognition.exists_nilpotent_automorphism_action line 20