Proof-engineering field notes
Clearer statements. Smaller failures. Reproducible proof.
Six original, practical guides for researchers and teams working across the gap between an informal theorem and a kernel-checked Lean 4 development.
What Is Lean 4 Proof Engineering?
A practical introduction to Lean 4 proof engineering: statements, tactics, dependencies, build feedback and the work between an idea and a verified artifact.
reproducible := by
trace_state; exact handoff
A Lean 4 Proof Repair Workflow That Stays Reproducible
A repeatable Lean 4 proof-repair workflow: reproduce the failure, minimize the declaration, inspect the goal, repair locally, and verify the final build.
Scoping a Lean Formalization Project Before You Commit
How to scope a Lean formalization project with explicit definitions, theorem boundaries, dependencies, acceptance criteria and a realistic verification budget.
How to Budget Proof Credits for Lean Work
A practical guide to budgeting AlphaProof Code proof credits across theorem triage, proof repair, dependency mapping and verification-ready review.
A Verification-Ready Review Checklist for Lean Code
A practical review checklist for Lean code: statements, assumptions, imports, axioms, placeholders, reproducibility and handoff evidence.
A Lean Theorem Statement Checklist
Use this Lean theorem statement checklist to catch ambiguous definitions, missing hypotheses, edge cases and verification mismatches before proof work begins.