2-billion-line Lean proofs: mathematicians debate proof without understanding

Singularitarian · x · 2026-09-09

Aram Pell asks what we actually learn from a 2-billion-line Lean proof of the Riemann Hypothesis, contrasting FLT's 13M-line formalization that still has a human-readable spine. Mathematician Alex Kontorovich pushes back: he'd iterate with AI on Lean proofs to compress and understand them, arguing formalization opens new paths to human understanding.

Related event: Two-Billion-Line Lean Proof Sparks Debate: Does Proof Equal Understanding?(2 posts)→

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