Source authenticated

Connes' Rigidity Conjecture

Are ICC property (T) groups remembered by their von Neumann algebras - if $L(\Gamma) \cong L(\Lambda)$ for such groups, must $\Gamma \cong \Lambda$? A counterexample refutes Connes' conjecture that these groups are uniquely determined by their group von Neumann algebras.

Exact FrontierDelta

Prior state unknown→disproved

Scope and record

Occurred: Aug 1, 2026

Delta type: SOURCE CLAIM

Assumptions: VibeMathed verification: lean-verified. Publication: announcement. AI contribution: ai-discovered. Imported under CC BY 4.0.

Canonical aliases: Connes' Rigidity Conjecture · Connes rigidity

Confidence: Not scored

Registry verification: lean verified · announcement · candidate

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Attribution

VibeMathed
registry · event recorded by

Astra (internal preview)
model · ai model contributor · OpenAI

Evidence vector

SourceReplayReproducedFormal proofStatement auditExternal checkExpert reviewPeer review

Named evidence

VibeMathed record: Connes' Rigidity Conjecture

specialist registry · passed

Kernel-checked Lean 4 certificate in OpenAI's public ten-proofs repository (Lean 4.32, mathlib, `lake build All`), with an independent Comparator checking route. Statement fidelity and community review of the day-old company announcement remain pending, hence candidate status.

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Lean certificate (ConnesRigidity.lean)

lean artifact · passed

lean-proof link supplied by the VibeMathed registry.

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Quantum Parallel Repetition

witness · pending

Primary source named by the VibeMathed record. Presence in this import is not an independent mathematical verification.

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Manuscripts (ten-proofs paper, PDF)

paper · pending

paper link supplied by the VibeMathed registry.