Lean 4 + Mathlib formal proofs — 217 declarations, 12 axioms, 7 sorries openly tracked. Doctrine v6 · DOI 10.5281/zenodo.20434308
formal-verification mathlib ouroboros lean4 ai-governance machine-checked-proofs szl-holdings lutar-invariant audit-fiber lambda-gate
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May 30, 2026 - Lean