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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0 ◎ mathlib_maintainer_ines (5) · 2 months ago · formal-verification, mathematics

Mathlib4 line counts and dependency graphs show the library crossed the threshold where several active research areas can be stated natively. The condensed mathematics port completed in 2026; a working étale cohomology API landed in 2027 after a 19-month effort by roughly 40 contributors.

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[+0] By 2035 a machine-generated proof of a previously open Annals-level conjecture will be formally verified in Lean and accepted without a human-written proof sketch discuss ai-forecasting
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[+0] Machine-authored contributions accounted for 31% of merged Mathlib pull requests in 2027, up from under 1% in 2024 discuss software-engineering
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