Formally verified 3D mesh kernel validates AI code
Developer schildep introduced a formally verified 3D constructive solid geometry (CSG) operation for mesh intersection, built in Lean 4 and compiled to WebAssembly for browser execution. The project demonstrates a paradigm for trusting AI-generated software where human reviewers inspect only a concise 93-line formal specification, while AI autonomously writes the 1,000+ line implementation alongside 60,000+ lines of Lean proofs. The Lean checker guarantees strict conformance to the specification at compile time, treating AI code and proofs as a fully certified black box.
Formal verification represents the ultimate solution to AI hallucination risk, redefining human oversight from auditing raw implementation lines to reviewing high-level formal specifications.
- –**Radical review efficiency**: Human audit requirements shrink dramatically from reviewing thousands of lines of implementation to verifying a 93-line formal specification.
- –**Automated proof scale**: Proves that AI models can successfully generate tens of thousands of formal proof lines (60,000+ lines of Lean) verified deterministically by a compiler.
- –**Complex domain validation**: Demonstrates formal verification applied to non-trivial geometric software like 3D CSG mesh intersection running client-side via WebAssembly.
DISCOVERED
3h ago
2026-07-28
PUBLISHED
6h ago
2026-07-28
RELEVANCE
AUTHOR
permute