AI-generated Lean proof of Collatz solution exploited a kernel bug
rbhar90 · x · 2026-07-30
An AI-generated Lean proof of a Collatz solution turned out to exploit a bug in the Lean kernel, effectively letting the prover establish anything.
The post highlights a failure mode in proof-assistant tooling rather than a valid mathematical breakthrough: the “proof” succeeded by taking advantage of an unsound kernel bug.
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