OAI/Analysis/KadisonKastler/ConcreteTraceUniqueness.lean

GitHub source file

8 declarations, 0 contain sorry, 0 declared as axioms

Uniqueness of the normalized faithful factor trace

Projection dimension identifies any positive normalized tracial functional on a finite diffuse factor. In particular, the explicit matrix trace agrees with the canonical ultrapower trace.

  1. def OAI.KadisonKastler.FaithfulTracialState.toContinuousLinearMap line 18
  2. theorem OAI.KadisonKastler.FaithfulTracialState.norm_toContinuousLinearMap_le line 21
  3. theorem OAI.KadisonKastler.FaithfulTracialState.nonneg line 32
  4. theorem OAI.KadisonKastler.scalarCenter line 47
  5. theorem OAI.KadisonKastler.one_ne_zero line 53
  6. theorem OAI.KadisonKastler.trace_on_selfAdjoint line 56
  7. theorem OAI.KadisonKastler.faithfulTracialState_unique line 71

    Source documentation

    Any two normalized faithful tracial states on a concrete II1 factor agree. Normality is not an extra premise.

    theorem faithfulTracialState_unique
        (hM : Generator.IsII1Factor M.toStarSubalgebra)
        (τ σ : FaithfulTracialState (Algebra M)) (x : Algebra M) :
        τ.toLinearMap x = σ.toLinearMap x := by
    …

    Mentions: OAI.Generator.IsII1Factor, OAI.KadisonKastler.FaithfulTracialState, OAI.KadisonKastler.Algebra

  8. theorem OAI.KadisonKastler.faithfulTracialState_eq_concreteFactorTrace line 83

    Source documentation

    The explicit normalized matrix trace therefore equals the canonical trace selected by the concrete factor construction.

    theorem faithfulTracialState_eq_concreteFactorTrace
        (hM : Generator.IsII1Factor M.toStarSubalgebra)
        (τ : FaithfulTracialState (Algebra M)) (x : Algebra M) :
        τ.toLinearMap x = (concreteFactorTrace hM).toLinearMap x :=
    …

    Mentions: OAI.Generator.IsII1Factor, OAI.KadisonKastler.FaithfulTracialState, OAI.KadisonKastler.Algebra, OAI.KadisonKastler.concreteFactorTrace