OAI/Analysis/KadisonKastler/MatrixEmbedding.lean

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13 declarations, 0 contain sorry, 0 declared as axioms

Trace-preserving finite-matrix embeddings from matrix units

  1. def OAI.KadisonKastler.matrixUnitsEmbedding line 20

    Source documentation

    The existing algebraic matrix-unit representation with the C⋆-matrix domain.

    def matrixUnitsEmbedding (E : Generator.MatrixUnitSystem ι A) : CStarMatrix ι ι ℂ →⋆ₐ[ℂ] A :=
    …

    Mentions: OAI.Generator.MatrixUnitSystem

  2. theorem OAI.KadisonKastler.matrixUnitsEmbedding_apply line 23
  3. theorem OAI.KadisonKastler.matrixUnitsEmbedding_single line 27
  4. theorem OAI.KadisonKastler.matrixUnitsEmbedding_injective line 34
  5. theorem OAI.KadisonKastler.norm_matrixUnitsEmbedding line 39
  6. theorem OAI.KadisonKastler.matrixUnits_trace_diagonal line 44
  7. theorem OAI.KadisonKastler.matrixUnits_trace_offDiagonal line 58
  8. theorem OAI.KadisonKastler.matrixUnitsEmbedding_trace line 64
  9. theorem OAI.KadisonKastler.matrixTrace_coefficientMatrixMap line 89
  10. def OAI.KadisonKastler.finiteMatrixEmbedding line 104

    Source documentation

    The concrete finite model embeds by the chosen inner matrix units, with the outer matrix coordinates represented on the Hilbert direct sum.

    def finiteMatrixEmbedding (E : Generator.MatrixUnitSystem (Fin (j + 1)) (Algebra M)) :
        FiniteMatrixModel n j →⋆ₐ[ℂ] Algebra (matrixVonNeumann (ι := Fin n) M) :=
    …

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

  11. theorem OAI.KadisonKastler.matrixVonNeumannTrace_map line 108
  12. theorem OAI.KadisonKastler.finiteMatrixEmbedding_trace line 116
  13. theorem OAI.KadisonKastler.finiteMatrixEmbedding_scalar line 129

    Source documentation

    The outer scalar matrix algebra is fixed by every choice of inner matrix units.

    theorem finiteMatrixEmbedding_scalar
        (E : Generator.MatrixUnitSystem (Fin (j + 1)) (Algebra M))
        (x : CStarMatrix (Fin n) (Fin n) ℂ) :
        finiteMatrixEmbedding E
            (coefficientMatrixMap (StarAlgHom.ofId ℂ (CStarMatrix (Fin (j + 1)) (Fin (j + 1)) ℂ)) x) =
          matrixAlgebraHom M (coefficientMatrixMap (StarAlgHom.ofId ℂ (Algebra M)) x) := by
    …

    Mentions: OAI.Generator.MatrixUnitSystem, OAI.KadisonKastler.Algebra, OAI.KadisonKastler.finiteMatrixEmbedding, OAI.KadisonKastler.coefficientMatrixMap, OAI.KadisonKastler.matrixAlgebraHom