OAI/GroupTheory/PolycyclicRecognition/Geometry/RealTorusSmoothRepresentation.lean

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4 declarations, 0 contain sorry, 0 declared as axioms

Smoothness of the rotational representation along a Lie group character

  1. def OAI.PolycyclicRecognition.realTorusUnitAction line 17

    Source documentation

    The compact rotations as units of the continuous endomorphism algebra.

    def realTorusUnitAction : realRotationTorus L H →* (L →L[ℝ] L)ˣ where
    …

    Mentions: OAI.PolycyclicRecognition.realRotationTorus

  2. theorem OAI.PolycyclicRecognition.realTorusUnitAction_apply line 30
  3. theorem OAI.PolycyclicRecognition.continuous_realTorusUnitAction line 33
  4. theorem OAI.PolycyclicRecognition.contMDiff_realTorusRepresentation line 52

    Source documentation

    A continuous compact rotation character of a Lie group has a smooth linear representation. No manifold structure on the compact torus is needed.

    theorem contMDiff_realTorusRepresentation
        {Exp : GroupLieAlgebra (𝓘(ℝ,E)) G → G} (hExp : IsGroupExponential Exp)
        (q : G →* realRotationTorus L H) (hq : Continuous q) :
        ContMDiff (𝓘(ℝ,E)) (𝓘(ℝ,L →L[ℝ] L)) ∞
          (fun g => (realTorusUnitAction H (q g) : L →L[ℝ] L)) := by
    …

    Mentions: OAI.PolycyclicRecognition.realRotationTorus, OAI.PolycyclicRecognition.realTorusUnitAction