OAI/Analysis/FiniteFactor/CrossedProduct/ProjectionPositiveConull.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

  1. theorem OAI.FiniteFactor.sourceProjection_positive_common_conull line 12

    Source documentation

    The strict diagonal conclusion and every previously verified orbit identity hold on one invariant Borel conull set for the original candidate projection.

    theorem sourceProjection_positive_common_conull
        (θ : SourceCoordinate → ℝ) (hθ : SourceAngles θ) (hr : SourceRationalIndependent θ)
        {p : SourceHilbert SourceCoordinate →L[ℂ] SourceHilbert SourceCoordinate}
        (hp : p ∈ sourceAlgebra θ) (hproj : IsStarProjection p) (hp0 : p ≠ 0) (hp1 : p ≠ 1)
        (hinv : (1-p)*sourceOperator θ sourceLogWeight hθ.nonneg sourceLogWeight_nonneg*p = 0) :
        ∃ Q : Set SourceTorus, MeasurableSet Q ∧ (∀ᵐ z ∂sourceTorusHaar, z ∈ Q) ∧
          (∀ z ∈ Q,
            finiteFloorSupport θ (sourceTorusRepresentative z) ∧
            IsStarProjection (sourceTorusOperatorField p z) ∧
            (∀ r k m : ℤ, (sourceTorusOperatorField p (sourceTorusRotate θ r z)
              (lp.single 2 m (1 : ℂ))) k =
              (sourceTorusOperatorField p z (lp.single 2 (m+r) (1 : ℂ))) (k+r)) ∧
    …

    Mentions: OAI.FiniteFactor.SourceCoordinate, OAI.FiniteFactor.SourceAngles, OAI.FiniteFactor.SourceRationalIndependent, OAI.FiniteFactor.SourceHilbert, OAI.FiniteFactor.sourceAlgebra, OAI.FiniteFactor.sourceOperator, OAI.FiniteFactor.sourceLogWeight, OAI.FiniteFactor.sourceLogWeight_nonneg, OAI.FiniteFactor.SourceTorus, OAI.FiniteFactor.sourceTorusHaar, OAI.FiniteFactor.finiteFloorSupport, OAI.FiniteFactor.sourceTorusRepresentative, OAI.FiniteFactor.sourceTorusOperatorField, OAI.FiniteFactor.sourceTorusRotate