OAI/Analysis/KadisonKastler/PreparedGraphRows.lean

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Prepared graph comparison from individual row approximants

Only a separate nearby row is required for each finite row in either algebra. No global linear map selecting those approximants is assumed.

  1. abbrev OAI.KadisonKastler.GraphRowApproximation line 27

    Source documentation

    The individual finite-row approximation property used in the graph construction. This notation imposes no compatibility among the choices.

    abbrev GraphRowApproximation (M N : VonNeumannAlgebra H) (γ : ℝ) : Prop :=
    …
  2. theorem OAI.KadisonKastler.norm_prepared_rescaledGraphProjection_sub_le_of_row_approx line 34

    Source documentation

    Common matrix actions and two-sided individual row approximation imply the uniform comparison of every positively rescaled closed graph.

    theorem norm_prepared_rescaledGraphProjection_sub_le_of_row_approx
        (M N : VonNeumannAlgebra H) (Ω : H) (hΩ : ‖Ω‖ = 1)
        (d : ℕ → ℕ) (E : ∀ n, Generator.MatrixUnitSystem (Fin (d n)) (H →L[ℂ] H))
        (hmono : Monotone (fun n => (E n).algebra))
        (hEM : ∀ n, (E n).algebra ≤ M.toStarSubalgebra)
        (hEN : ∀ n, (E n).algebra ≤ N.toStarSubalgebra)
        (hirrM : ∀ A ∈ M, (∀ n a, a ∈ (E n).algebra → a * A = A * a) →
          ∃ z : ℂ, A = z • (1 : H →L[ℂ] H))
        (hirrN : ∀ A ∈ N, (∀ n a, a ∈ (E n).algebra → a * A = A * a) →
          ∃ z : ℂ, A = z • (1 : H →L[ℂ] H))
        (hcentralM : ∀ n a, a ∈ (E n).algebra → ∀ z ∈ M,
          inner ℂ Ω ((a * z) Ω) = inner ℂ Ω ((z * a) Ω))
    …

    Mentions: OAI.Generator.MatrixUnitSystem