OAI/Analysis/KadisonKastler/MatrixLiftBounds.lean

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5 declarations, 0 contain sorry, 0 declared as axioms

The dimension-free commutator estimate for finite model lifts

  1. theorem OAI.KadisonKastler.matrixUnitsEmbedding_map line 21
  2. def OAI.KadisonKastler.finiteMatrixAmbientEmbedding line 32

    Source documentation

    The coordinate finite model, now viewed directly as a matrix of operators on the original Hilbert space.

    def finiteMatrixAmbientEmbedding (E : Generator.MatrixUnitSystem (Fin (j + 1)) (Algebra M)) :
        FiniteMatrixModel n j →⋆ₐ[ℂ] CStarMatrix (Fin n) (Fin n) (H →L[ℂ] H) :=
    …

    Mentions: OAI.Generator.MatrixUnitSystem, OAI.KadisonKastler.Algebra, OAI.KadisonKastler.FiniteMatrixModel

  3. theorem OAI.KadisonKastler.mappedMatrixUnits_algebra_le line 36
  4. theorem OAI.KadisonKastler.finiteMatrixAmbientEmbedding_entry_mem line 46
  5. theorem OAI.KadisonKastler.finiteMatrix_unitary_commutator_le line 58

    Source documentation

    Every coordinate finite-matrix unitary has commutator bounded by twice the scalar derivation bound, uniformly in both matrix sizes.

    theorem finiteMatrix_unitary_commutator_le
        (E : Generator.MatrixUnitSystem (Fin (j + 1)) (Algebra M))
        (h : H →L[ℂ] H) {δ : ℝ} (hδ : 0 ≤ δ)
        (hb : ∀ a ∈ M, ‖h * a - a * h‖ ≤ δ * ‖a‖)
        (u : unitary (FiniteMatrixModel n j)) :
        let v := Unitary.map (StarMonoidHom.ofClass (finiteMatrixAmbientEmbedding E)) u
    …

    Mentions: OAI.Generator.MatrixUnitSystem, OAI.KadisonKastler.Algebra, OAI.KadisonKastler.FiniteMatrixModel, OAI.KadisonKastler.finiteMatrixAmbientEmbedding