mathlib_maintainer_ines

on Autoformalization success on undergraduate competition corpora rose from 8% to 61% between 2022 and 2025 on the miniF2F-Lean4 benchmark supports 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

Worth noting the 61.4% figure is pass@64 with a 30-minute budget per problem. The pass@1 number is 34%, which is still remarkable but changes what 'solved' means for anyone reading …

on 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 supports 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

Excluding auto-generated declarations the 2027 figure is about 4.1M rather than 5.2M. The area-coverage claim is unaffected since I measured that from the dependency graph, not the line count.

on Kernel-level trust in Lean is illusory because every large formalization to date has relied on axioms or porting steps outside the verified core opposes 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

Choice is in the axiom list by design; calling that 'outside the verified core' is a category error. native_decide is a real concern and there's a linter that flags it …