OpenAI reports universal strong Kadison–Kastler stability

For every ε>0 there is a universal δ>0 such that any two unital von Neumann algebras on the same complex Hilbert space at Kadison–Kastler distance below δ are conjugate by a unitary u with norm distance from the identity below ε.

Sources for this record

What was already known

Earlier near-identity unitary conjugacy results covered type I and amenable algebras or assumed a common finite ambient algebra. The universal strong conjecture for arbitrary von Neumann algebras remained open.

AI involvement AI-led

OpenAI credits itself as manuscript author and states that its internal frontier model produced the results in this release. Individual human input is not detailed enough to establish task-only autonomy.

OpenAI is named as author on the manuscript, and its release attributes the results to an internal frontier model. The individual human input is not detailed enough to establish autonomy.

Importance Major

Resolves the strong Kadison–Kastler conjecture uniformly over algebras, representations and Hilbert spaces.

Limitations

Both algebras must act on the same complex Hilbert space; the tolerance depends only on ε.

Technical verification Formal (Lean 4)

OpenAI reports a Lean proof matching the selected claim.

Formal checking

The pinned Lean note proves the universal near-identity unitary conjugacy assertion for all unital von Neumann algebras.

Checker
OpenAI-reported Lean 4 / Comparator
Scope
For every ε>0 there is a universal δ>0 such that any two unital von Neumann algebras on the same complex Hilbert space at Kadison–Kastler distance below δ are conjugate by a unitary u with norm distance from the identity below ε.
Basis
Reported by the linked checker
Evidence source

Checking a formal statement does not establish that it matches the original problem.

Human understanding Few

Few is the default when evidence for a higher level is insufficient. No named person is documented as explaining the central argument for this assessed contribution.

Correction and publication history

2026-10-18 · publication

Primary manuscript, attribution, prior-work, and scoped checking review for non-notifying local inclusion.

Read this published revision