OAI/GroupTheory/PolycyclicRecognition/Geometry/IntegralSemidirectPowerTopology.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

The finite-index power subgroup is closed in the integral extension

  1. theorem OAI.PolycyclicRecognition.latticePowerHom_isEmbedding line 13
  2. theorem OAI.PolycyclicRecognition.integralSemidirectPowerMap_isClosedEmbedding line 22