OAI/Analysis/KadisonKastler/NormalTracialSpatialSplit.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

Transporting the tracial splitting argument through a normal representation

  1. theorem OAI.KadisonKastler.mem_of_fixed_commutant_unitaries line 17
  2. theorem OAI.KadisonKastler.exists_selfAdjoint_split_of_normal_tracial_commutant line 43

    Source documentation

    The trace vector may live in a different faithful normal representation.

    theorem exists_selfAdjoint_split_of_normal_tracial_commutant
        (M : VonNeumannAlgebra H) (P : VonNeumannAlgebra J)
        (ρ : Algebra M.commutant ≃⋆ₐ[ℂ] Algebra P) (τ : TracialRepresentation P)
        (hρ : ∀ C : ℝ, Continuous (fun b : weakOperatorBall M.commutant C =>
          ofCLM (ρ ⟨b.val.toCLM, b.property.1⟩).val))
        (T : H →L[ℂ] H) (hTsa : IsSelfAdjoint T)
        (hT : ∀ a ∈ M, T * a - a * T ∈ M) :
        ∃ a : H →L[ℂ] H, a ∈ M ∧ IsSelfAdjoint a ∧ ‖a‖ ≤ ‖T‖ ∧
          T - a ∈ M.commutant := by
    …

    Mentions: OAI.KadisonKastler.Algebra