OAI.Kadison.MatrixCorners.normalizedStageAlphabet_centered: intermediate lemma from OpenAI, Kadison's similarity theorem through uniform derivation estimates (result family 288)
ProvedOAI.Kadison.MatrixCorners.normalizedStageAlphabet_centeredAn intermediate lemma of the split of OpenAI's proof of OAI.Kadison.uniform_commutator, carved from OpenAI's openai/math development for this platform. The statement and its proof are OpenAI's (OpenAI, Kadison's similarity theorem through uniform derivation estimates (result family 288), OpenAI Math Release, September 23, 2026, result family 288, github.com/openai/math, Apache License 2.0), ported to Lean 4.33.1 and Mathlib 0df444a.
The statement, as published (namespace OAI.Kadison.MatrixCorners, with open scoped BigOperators ComplexOrder InnerProductSpace):
lemma normalizedStageAlphabet_centered (g : G) (hg : g≠0) :
τ (normalizedStageAlphabet φ p hp e α g)=0
Definitions. The statement is written with OAI.Kadison.MatrixCorners.normalizedStageAlphabet and OAI.Kadison.MatrixCorners.projectionIndices (definitions bundle OAIQ039C013 of this split).
Used by. The proof of OAI.Kadison.TracialGNS.corner_arbitrarily_large_alphabet of this split imports it.
import Mathlib import Definitions.Def_OAIQ039C013
section
set_option linter.all false
set_option linter.unusedVariables false
set_option linter.unusedTactic false
set_option linter.unreachableTactic false
namespace OAI
noncomputable section
section
noncomputable section
open scoped BigOperators ComplexOrder InnerProductSpace
namespace Kadison.MatrixCorners
attribute [local instance] Classical.propDecidable
variable {A : Type*} [CStarAlgebra A] [PartialOrder A] [StarOrderedRing A]
(τ : A →ₚ[ℂ] ℂ) (hτ : ∀ a b, τ (a*b)=τ (b*a)) (h1 : τ 1=1)
{I : Type*} [Fintype I] [DecidableEq I] [Nonempty I]
(φ : Matrix I I ℂ →⋆ₐ[ℂ] A) (p : Matrix I I ℂ) (hp : IsStarProjection p)
{G : Type*} [Fintype G] [DecidableEq G] [AddCommGroup G]
(e : G ≃ projectionIndices p hp)
variable (α : ℝ) (hα : 0<α) (hατ : τ (φ p)=(α:ℂ))
include hτ h1 in
omit [StarOrderedRing A] in
lemma normalizedStageAlphabet_centered (g : G) (hg : g≠0) :
τ (normalizedStageAlphabet φ p hp e α g)=0 := by
sorry
end Kadison.MatrixCorners
end
end
end
end OAI
end