OAI/GroupTheory/PolycyclicRecognition/Algebra/TemplateConeTraceSeparation.lean

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The actual transformed pure-word traces determine the offset

  1. theorem OAI.PolycyclicRecognition.eq_of_transformed_pure_word_trace_inequalities line 19

    Source documentation

    Apply the forward and reversed volume tests to the same transformed ray quotient and to each independent two-ray quotient. The positive pure-word multiplicities then force equality of the original offsets.

    theorem eq_of_transformed_pure_word_trace_inequalities
        (D : SupportDatum W I B) (A : templateSymmetryGroup D)
        (hne : ∀ i, D.weight i ≠ 0) (j : I)
        (cRay : I → ℕ) (cTwo : I → I → ℕ)
        (houtRay : ∀ i, (D.weight i).toContinuousLinearMap ∉
          transformedPolarCone (closedWeightRay (D.weight j).toContinuousLinearMap
            (by simpa using hne j)) A.val → cRay i = 0)
        (hinRay : ∀ i, (D.weight i).toContinuousLinearMap ∈
          transformedPolarCone (closedWeightRay (D.weight j).toContinuousLinearMap
            (by simpa using hne j)) A.val → 0 < cRay i)
        (houtTwo : ∀ k (h : LinearIndependent ℝ
            ![(D.weight j).toContinuousLinearMap, (D.weight k).toContinuousLinearMap]),
    …

    Mentions: OAI.PolycyclicRecognition.SupportDatum, OAI.PolycyclicRecognition.templateSymmetryGroup, OAI.PolycyclicRecognition.transformedPolarCone, OAI.PolycyclicRecognition.closedWeightRay