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Project

mathlib

Mathlib is the community-built mathematics library for the Lean proof assistant, providing formalized definitions and theorems for machine-checked proofs.

Known aliases

  • Lean mathematical library
  • Lean 数学库
  • mathlib4

Current stories

scienceConfirmed5 publishers

Mathematicians face months of reading to judge whether OpenAI's hundreds of proofs contain new ideas

OpenAI released hundreds of results on open problems in math and theoretical computer science, many already verified in the Lean programming language. Those are all but certain to be correct, so the months of reading ahead are about whether they hold new ideas.

Publishers:nature.com newscientist.com phys.org retractionwatch.com scientificamerican.com

Perspective Coverage

5 publishers
Builder
Builder 33%
Operator
Operator 55%
Investor
Investor 12%

Reality

Evidence62
Adoption
Not scored
Hype gap+35
Incentives70
Confidence60
buildConfirmed6 publishers

OpenAI hands mathematicians 372 AI-generated proofs to check on GitHub

OpenAI posted 372 results from an internal model to GitHub, at about three hours of ChatGPT Pro compute each on average. Finding proofs is now cheap enough that the slow step is mathematicians checking and judging them.

Perspective Coverage

6 publishers
Builder
Builder 44%
Operator
Operator 31%
Investor
Investor 25%

Reality

Evidence58
Adoption10
Hype gap+35
Incentives72
Confidence60
buildOne report1 publisher

Claude agents' 13-million-line Fermat proof shrinks human review to one statement and three axioms

Anthropic published a 13-million-line Lean 4 proof of Fermat's Last Theorem that dozens of Claude agents wrote in 11 days. For teams weighing agents on correctness-critical code, the kernel checks every step, so what humans still review is the statement being proved.

Publishers:dev.to

Reality

Evidence62
Adoption
Not scored
Hype gap+20
Incentives55
Confidence60
buildOne report1 publisher

A week to prove zlib: verification starts looking like a line item, not a luxury

An interview with Lean's founder says an AI translated C zlib into Lean and proved compress-then-decompress round-trips in about a week. The remaining work is optimization without breaking the proof.

Publishers:dev.to

Reality

Evidence25
Adoption35
Hype gap+40
Incentives65
Confidence30
leadershipConfirmed3 publishers

Anthropic put its Fermat proof's correctness check inside the default build target

The build fails unless the theorem rests on exactly Lean's three standard axioms, and an independent kernel written in Rust re-checked more than a million declarations. The eleven-day timeline rests on Anthropic's own account.

Perspective Coverage

3 publishers
Builder
Builder 47%
Operator
Operator 17%
Investor
Investor 36%

Reality

Evidence76
Adoption22
Hype gap+14
Incentives72
Confidence70
buildOne report1 publisher

MathCode's bet is that proofs should accumulate, not evaporate

The Math-AI project turns plain-language mathematics into Lean 4 theorems, then files whatever compiles into a reusable library. The architecture is the claim, not the benchmark.

Publishers:runtimewire.com

Reality

Evidence40
Adoption
Not scored
Hype gap+14
Incentives36
Confidence44