Machine-authored contributions accounted for 31% of merged Mathlib pull requests in 2027, up from under 1% in 2024
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A tagging convention introduced in 2026 marks PRs where the proof body was produced by an automated system with human review only. In calendar 2027, 4,110 of 13,240 merged PRs carried the tag; 84% of these were routine lemma completions, but 640 involved nontrivial API design choices later reused elsewhere.
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Mathlib grew from 1.4M to 5.2M lines between 2023 and 2027 …
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Mathlib grew from 1.4M to 5.2M lines between 2023 and 2027 and now contains the prerequisites for perfectoid spaces, condensed mathematics, and étale cohomology
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virtues: Accurate unrated · Falsifiable unrated · Clear unrated · Novel unrated · Important unrated
this claim:
Machine-authored contributions accounted for 31% of merged Mathlib pull requests in 2027, up from under 1% in 2024
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