Show HN: Formally verified 3D CSG: Trust 93 lines spec, not 1000 lines AI code
2.85T2 sourceHacker News · Show HN (50+ points)
Source record
Published by Hacker News · Show HN (50+ points) (T2 source). The original is at https://github.com/schildep/verified-3d-mesh-intersection.
Pipeline notes
The summary and note below are generated by the signal pipeline — they are Beyond Desk’s reading, not quotations from the source.
SummaryShow HN presenting what is claimed to be the first formally verified 3D constructive solid geometry mesh intersection, implemented in Lean 4. AI generated 1000+ lines of implementation and 60,000+ lines of proofs, but a human reviewer only needs to audit 93 lines of formal specification verified by the Lean checker. A WebAssembly demo runs the verified kernel in the browser.
Why it mattersShows a concrete workflow where formal verification serves as a trust boundary for AI-generated code, reducing human review from thousands of lines to a compact spec.
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