Largest Lean codebase yet; Szegedy says failing to autoformalize ABC would be a signal

ChrSzegedy · x · 2026-10-28

leonardoalt's team shipped the largest Leanprover codebase to date, declaring "let's formally verify everything." Google researcher Christian Szegedy quotes it: soon, if the ABC conjecture can't be autoformalized after FLT and this result, "it will be a clear signal" — implying formal verification is closing in on math's hardest open problems.

Related event: Colossal Finite Simple Groups Proof Fully Formalized in Lean, Machine-Verified(19 posts)→

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