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Bizeul–Klartag–Lehec reports: a dimension-free KLS bound

Bizeul, Klartag and Lehec report a universal upper bound for the Poincaré constant of every isotropic log-concave probability measure in every dimension, resolving the KLS conjecture in its functional formulation.

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Sources for this record

What was already known

Dimension-dependent estimates and a recent criterion of Song and Zhang preceded this argument. Song and Zhang’s revised preprint independently claims the full bound; priority is not assigned here.

What changed and why it matters

Establishes dimension-free concentration and isoperimetric control central to convex geometry and random sampling.

The AI contribution

The authors attribute most mathematical ideas and proofs to ChatGPT; they supplied the suspension idea and worked to understand and improve the exposition.

Limitations

Preprint; AIProofWatch reviewed the theorem and attribution, not the proof. No formal compilation, outside verification or peer review is asserted. The concurrent Song–Zhang claim is context, not another AI discovery in this entry.

Verification evidence

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

Author claim

Theorem 1.1 and the authors’ attribution paragraph.

Accessible artifact / proof

The original written argument is accessible; no proof audit claimed.

Correction and publication history

2026-10-13 · amendment

Correct this run’s initial topic association: KLS concerns broad geometric isoperimetry and analysis/probability, rather than the specifically named Convex-body coverings interest. Preserve the source statement and non-notifying historical status.

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2026-10-13 · publication

Historical backfill after the primary statement and AI-provenance review of the changed discovery entry. Original report is 4 October, not today. Apply through the non-notifying reviewed workflow; no old alert replay.

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