OAI/GroupTheory/PolycyclicRecognition/Algebra/NormalizedGeneration.lean

GitHub source file

2 declarations, 0 contain sorry, 0 declared as axioms

Generation persists in the compact normalized family

The word-normalization equations express a fixed vector-space basis as words in the generators. They therefore imply Lie generation for every limiting law.

  1. theorem OAI.PolycyclicRecognition.evalBilinearWord_eq_lieWord line 22

    Source documentation

    The recursively evaluated operation agrees with the Lie structure that it defines.

    theorem evalBilinearWord_eq_lieWord (B : V →L[ℝ] V →L[ℝ] V)
        (h : IsLieBracket B) (X : I → V) (w : FreeMagma I) :
        letI := lieRingOfBilinear B h
    …

    Mentions: OAI.PolycyclicRecognition.IsLieBracket, OAI.PolycyclicRecognition.lieRingOfBilinear

  2. theorem OAI.PolycyclicRecognition.lieSpan_eq_top_of_word_basis line 34

    Source documentation

    Fixed basis-word identities prevent loss of generation in a limit.

    theorem lieSpan_eq_top_of_word_basis (B : V →L[ℝ] V →L[ℝ] V)
        (h : IsLieBracket B) (X : I → V) (b : Basis J ℝ V) (w : J → FreeMagma I)
        (hw : ∀ j, evalBilinearWord B X (w j) = b j) :
        letI := lieRingOfBilinear B h
    …

    Mentions: OAI.PolycyclicRecognition.IsLieBracket, OAI.PolycyclicRecognition.evalBilinearWord, OAI.PolycyclicRecognition.lieRingOfBilinear