OAI/GroupTheory/PolycyclicRecognition/Algebra/RescaledFixedTranslation.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

Fixed group moves disappear in positively weighted word charts

  1. theorem OAI.PolycyclicRecognition.rescaled_fixed_translation_tendsto line 21

    Source documentation

    The coordinate maps of every fixed right move tend to the identity in the compact-open topology. This is the part of Cartan scaling needed by the density sampling argument; it does not require a preconstructed graded Lie group or any metric scaling premise.

    theorem rescaled_fixed_translation_tendsto
        {I L G : Type*} [Fintype I] [DecidableEq I]
        [LieRing L] [LieAlgebra ℝ L] [Group G]
        (X : I → L) {k c : ℕ} (hk : lowerCentralSeries ℝ L L k = ⊥)
        (hletters : ∀ i : I, FreeMagma.of i ∈ boundedBracketWords k)
        (b₀ : Basis (Fin (finrank ℝ L)) ℝ L)
        (s : I → ℝ) (hs : ∀ i, 0 < s i)
        (β : WordBasisSelections X (boundedBracketWords k))
        (hβ : IsMaximizingColumnBasis (wordListCoordinates X (boundedBracketWords k) b₀)
          (fun w => bracketWordExponent s w) β.val)
        (Exp : L → G) (hinj : Function.Injective Exp)
        (hzero : Exp 0 = 1) (hneg : ∀ x, Exp (-x) = (Exp x)⁻¹)
    …

    Mentions: OAI.PolycyclicRecognition.boundedBracketWords, OAI.PolycyclicRecognition.WordBasisSelections, OAI.PolycyclicRecognition.IsMaximizingColumnBasis, OAI.PolycyclicRecognition.wordListCoordinates, OAI.PolycyclicRecognition.bracketWordExponent