Hacker News·3 min read·hard
Postmortem for Kernel Soundness Bug #14576
J
juhopitk✦AI Summary
Developers have patched a soundness bug in the Lean kernel that allowed for the acceptance of invalid proofs, including a flawed AI-assisted attempt at the Collatz conjecture. The issue was identified as an implementation error in how the kernel handles nested inductive types.
A soundness bug in the Lean kernel ( #14576 ) was reported and fixed during the week of July 27. It has had visibility on Zulip and social media (e.g., X, LinkedIn, and Mastodon).
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