mathlib
No written verdict yet. Here is what commenters said.
5recommend
1warn against
Nov 2, 2025first mention
Oct 10, 2026latest mention
Why people recommend it
“so we can be reasonably confident about their correctness”
“mathlib (human, expert curated)”
Show 3 more
“I generally rather rely on someone else getting the category theory and algebraic structures right”
uses theorem provers for projectson “We have proof automation now”
“From the article: https://mathlib.org”
“Lean's library of mathematics, mathlib, is organized like an open source community with pull requests”
Caveats and dissent
“the Lean formalization of the Riemann Hypothesis in Mathlib was incorrect.”
Often compared with
Who recommends it in their own words
Threads where it came up
- What mathematicians should know about the Lean Theorem Prover: reliability & AI 1 mention
- OpenAI withdraws three mathematical results 1 mention
- Navier–Stokes Lost in Translation 1 mention
- Sharing AI progress in mathematics 1 mention
- Mathematicians Build Long-Awaited Graph Sandwich 1 mention
- Formalizing Fermat's Last Theorem 1 mention
Also written as Mathlib. Data: mathlib.json. Quotes are verbatim; the verdict and theme labels are written by a model from these comments, and every clause links to its sources.
All comments 11
“considerable uplift of Lean's mathlib”
“the Lean formalization of the Riemann Hypothesis in Mathlib was incorrect.”
“so we can be reasonably confident about their correctness”
“mathlib (human, expert curated)”
“And they depend on https://github.com/leanprover-community/mathlib4”
“It is in mathlib.”
“I generally rather rely on someone else getting the category theory and algebraic structures right”
“From the article: https://mathlib.org”
“Mathlib defines `by_contradiction` as a theorem proving `(¬p → False) → p` for any proposition p.”
“modulo my unfamiliarity with mathlib”
“Lean's library of mathematics, mathlib, is organized like an open source community with pull requests”