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Claude: a reported improvement in the proportion of zeta zeros on the critical line

Alpöge and Furman report an unconditional lower bound of 0.6725 for the proportion of nontrivial zeta zeros that are simple and lie on the critical line.

Sources for this record

What was already known

The paper compares its result with the previous 5/12 unconditional proportion bound.

What changed and why it matters

Substantially raises a longstanding unconditional proportion bound from 5/12 to 0.6725 on a central analytic-number-theory target. The full hypothesis remains unresolved. Lamzouri’s separate human follow-up replaces the matrix framework with a Hilbert-space inequality and gives additional unconditional estimates, including a proportion above 88.76% for zeros that are simple or on the critical line (or both). This follow-up is linked context, not a second count of the same AI discovery.

The AI contribution

The source attributes discovery to Claude; the named human authors validated and communicated the argument.

Limitations

The full Riemann hypothesis remains a stronger statement. AIProofWatch has not rerun the Lean project or audited the analytic dependencies. The paper’s authors work at Anthropic, so their validation is not independent checking. Lamzouri gives a different proof of the proportion bound, not a line-by-line audit of Claude’s original proof. His additional results are human work and are not attributed to Claude. AIProofWatch has not audited the follow-up.

Verification evidence

Evidence labels show what supports the claim. Importance rates its impact if correct.

Author claim

Reported theorem and provenance in version 2.

Accessible artifact / proof

Pinned-toolchain project and comparator information are available.

Formal checking

Anthropic reports Lean/comparator checking; AIProofWatch has not run it.

Checker: Anthropic formalization team (reported)
Scope: The project’s statement on simple critical-line zeros, under its declared analytic dependencies.
Basis: Reported by the linked checker

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

Correction and publication history

2026-10-11 · amendment

News-led source-context amendment, preserving the existing claim, rating, AI attribution and checking limits. No subscriber alerts.

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2026-10-11 · amendment

Editorial importance reassessment: rate the scoped impact if correct independently from verification. The claim, limitations, sources, and verification evidence are unchanged.

Read this published revision