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MIPRE.Background.Orthonormalization.Orthogonalization.Blocks.Glue

theorem Orthogonalization.Blocks.star_sum_mul_sum {κ : Type u_2} [Fintype κ] {A : Type u_3} [NonUnitalNonAssocSemiring A] [StarRing A] (b : κ → A) (h : ∀ (j k : κ), j ≠ k → star (b j) * b k = 0) :
star (∑ j : κ, b j) * ∑ j : κ, b j = ∑ j : κ, star (b j) * b j

star (∑ b j) * ∑ b j = ∑ star (b j) * b j when the cross terms vanish.

Theorem 1.2 at z for the functionals satisfying a predicate P (OrthAt M z ι is the case P = fun _ => True; the normal functionals are the case of tier T3).

Equations
  • One or more equations did not get rendered due to their size.
Instances For
    theorem Orthogonalization.Blocks.orthAtP_one_of_blocks {H : Type u_1} [NormedAddCommGroup H] [InnerProductSpace ℂ H] [CompleteSpace H] (M : VonNeumannAlgebra H) {κ : Type u_2} [Fintype κ] (z : κ → H →L[ℂ] H) (hz : ∀ (j : κ), IsCentralProj M (z j)) (hzo : ∀ (j k : κ), j ≠ k → z j * z k = 0) (hzs : ∑ j : κ, z j = 1) (ι : Type u_3) [Fintype ι] (P : ((H →L[ℂ] H) →ₗ[ℂ] ℂ) → Prop) (hP : ∀ (φ : (H →L[ℂ] H) →ₗ[ℂ] ℂ), P φ → ∀ (c : ℝ), 0 < c → P (↑c • φ)) (h : ∀ (j : κ), OrthAtP M (z j) ι P) :
    OrthAtP M 1 ι P

    Gluing. Theorem 1.2 at each block of an orthogonal central decomposition of 1 gives Theorem 1.2 for M, for any class P of functionals closed under positive real scaling.

    theorem Orthogonalization.Blocks.orthAt_one_of_blocks {H : Type u_1} [NormedAddCommGroup H] [InnerProductSpace ℂ H] [CompleteSpace H] (M : VonNeumannAlgebra H) {κ : Type u_2} [Fintype κ] (z : κ → H →L[ℂ] H) (hz : ∀ (j : κ), IsCentralProj M (z j)) (hzo : ∀ (j k : κ), j ≠ k → z j * z k = 0) (hzs : ∑ j : κ, z j = 1) (ι : Type u_3) [Fintype ι] (h : ∀ (j : κ), OrthAt M (z j) ι) :
    OrthAt M 1 ι

    Gluing for arbitrary positive functionals.