Applications & products
Formalizing Fermat's Last Theorem
Anthropic reports that Claude produced an end-to-end Lean formalization of Fermat’s Last Theorem in 11 days. The reported advance is machine-checkable verification of a proof, not a new mathematical result.
Why it matters: If formalization becomes easier to scale, it could help researchers catch errors and reduce the human burden of reviewing new results. The authors argue it should complement—not replace—a human-understandable exposition.