When the paper and the Lean proof disagree: inside AI math pipelines' backporting bug
burny_tech · x · 2026-10-09
Commenting on an AI math result, thomasahle argues models solve problems in text first, then a separate agent formalizes them into Lean. That agent may spot and repair issues in the proof but never back-ports fixes to the paper text, so papers and formalizations diverge — a recurring failure mode. His suggestion: ask the model to check how the issue is fixed in the Lean code.
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