Claude agents narrow an odd-zeta irrationality window to eight values

At least one of the eight classical Riemann zeta values ζ(7),ζ(9),…,ζ(21) is irrational; the theorem names no particular value.

Sources for this record

What was already known

Zudilin had proved that at least one odd zeta value in the longer list ζ(7), ζ(9), …, ζ(35) is irrational. Zudilin’s later very-well-poised linear forms suggested shorter lists, but his needed asymptotic lemma was unproved beyond three derivatives.

AI involvement AI-led

The maintainer credits Claude agents with the mathematical configuration, size and nonvanishing theorems, informal proofs and Lean formalization, while the human directed the work.

The maintainer explicitly credits Claude agents with the configuration, key size and nonvanishing theorems, informal proofs and Lean formalization under human direction.

Importance Notable

Shortens a published odd-zeta irrationality window using a new configuration and a formal proof that avoids the missing asymptotic lemma.

Limitations

The mathematics and Lean proof were produced by Claude agents under human direction and have not been reviewed by a human expert. The author’s prior-work search did not include MathSciNet, so novelty beyond its stated search is not fully established. An unrefereed September 2026 preprint separately claims ζ(7) alone is irrational, which would imply this result, but its numerical constants are disputed in a project issue; no exclusive priority claim is made. The theorem gives no individual value or irrationality measure.

Technical verification Formal (Lean + leanchecker + comparator)

The theorem has no hypotheses and uses Mathlib’s riemannZeta directly. The source reports completed Lean proof checking, kernel-checked numerical certificates, leanchecker replay and Comparator matching of the Challenge and Solution statements. AIProofWatch did not rerun the checks.

Formal checking

Repository reports no admitted proofs in imported modules, Lean kernel checking and leanchecker replay.

Checker
Lean 4 kernel, leanchecker and Comparator as run by maintainer and Palomar registry
Scope
At least one Mathlib riemannZeta value at the eight specified odd integers is irrational; no individual identification
Basis
Reported by the linked checker
Evidence source

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

Human understanding Few

The source says the AI-produced mathematical argument has not been reviewed by a human expert; no independent human explanation of the configuration and analytic estimates is documented. Few is an evidence default.

Correction and publication history

2026-10-18 · publication

Primary-source review of exact Mathlib theorem, Zudilin baseline, AI-origin disclosure, checker scope and competing claim.

Read this published revision