OAI/Analysis/KadisonKastler/MinimalRowDynamics.lean

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4 declarations, 0 contain sorry, 0 declared as axioms

Every orbit in a minimal row family is dense in that family.

  1. theorem OAI.KadisonKastler.boundedWeakAlgebraMap_ext line 20
  2. theorem OAI.KadisonKastler.boundedWeakRowOrbit_subset_of_invariant line 27
  3. theorem OAI.KadisonKastler.minimal_row_family_orbit_dense line 36
  4. theorem OAI.KadisonKastler.minimal_row_family_quantity_constant line 49

    Source documentation

    Every lower-semicontinuous quantity decreased by all row averages is constant on a minimal invariant family. This is the norm-minimization step; no right-module conclusion is built into it.

    theorem minimal_row_family_quantity_constant {M : VonNeumannAlgebra H} {c : ℝ}
        (hc : 0 ≤ c) (K : Set (BoundedWeakAlgebraMap M c)) (hclosed : IsClosed K)
        (hinv : RowInvariant hc K)
        (hmin : ∀ L : Set (BoundedWeakAlgebraMap M c), L ⊆ K → L.Nonempty → IsClosed L →
          RowInvariant hc L → L = K)
        (q : BoundedWeakAlgebraMap M c → ℝ) (hsub : ∀ a, IsClosed {F | q F ≤ a})
        (hdec : ∀ (n : ℕ) (r : Fin n → Algebra M) (hr : ∑ i, r i * star (r i) = 1)
          (F : BoundedWeakAlgebraMap M c), q (boundedWeakRowAverage hc r hr F) ≤ q F)
        {F G : BoundedWeakAlgebraMap M c} (hF : F ∈ K) (hG : G ∈ K) : q F = q G := by
    …

    Mentions: OAI.KadisonKastler.BoundedWeakAlgebraMap, OAI.KadisonKastler.RowInvariant, OAI.KadisonKastler.Algebra, OAI.KadisonKastler.boundedWeakRowAverage