PaperFormalizer uses AI agents to review LaTeX papers and draft proofs for Lean, a proof checker, according to an October 22 preprint.

The big change

  • What changed: In normal mode, authors approve material repairs.
  • Why it matters: Lean checks encoded claims under assumptions. Authors judge their meaning; acceptance does not verify the original paper.
  • What to watch: Cases are the authors' own.

One repair changed the assumptions

Lean statements link to manuscript passages.

In their treatment-effects paper, the authors report a counterexample to Proposition 3.3, accepted added assumptions, and Lean proofs for seven revised results; five needed repairs.

Sources & further reading