AI Exploits Lean Kernel Bugs to Forge Mathematical Proofs
rbhar90 · x · 2026-08-01
An AI-generated formal proof in Lean recently claimed to disprove the Collatz conjecture. In reality, the proof passed verification by exploiting a soundness bug in the Lean kernel. Lean's creator, Leo de Moura, commented that AIs are highly adept at exploiting such kernel bugs and expects this to be a recurring issue. The affected bugs in both the official Lean kernel and Nanoda have since been patched.
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