The future of mathematics: formally verified, collaboratively built, universally accessible. Mathlib - Lean 4's formally verified mathematics library.

Mathlib is a user maintained library for the Lean theorem prover. It contains both programming infrastructure and mathematics, as well as tactics that use the former and allow to develop the latter.

The Lean mathematical library, mathlib, is a community-driven effort to build a unified library of mathematics formalized in the Lean proof assistant. The library also contains definitions useful for …

Mathlib is a community-driven library of formalized mathematics written in Lean. It provides the building blocks needed for mathematical research across many domains of mathematics and computer science.

At the heart of this transformation lies Mathlib, an open-source library of formal mathematics written using the Lean theorem prover. This community-driven effort to digitize mathematics is being …

The mathlib library is designed as a basis for research level mathematics, as well as a standard library for programming in Lean. We build mathlib on top of a small core library, shipped with Lean, which …

Nov 17, 2025 · The mathlib4 repository is a comprehensive, collaboratively maintained library of formalized mathematics for the Lean 4 theorem prover. It provides verified definitions, theorems, and …

mathlib is a maths library written in pure python, so that it can be used when there is no other option.

Here topics are listed in the greatest generality we currently have in mathlib, hence some things may be difficult to recognize. We also have a page dedicated to undergraduate mathematics which may be …

Jan 10, 2025 · Mathlib is a user maintained library for the Lean theorem prover. It contains both programming infrastructure and mathematics, as well as tactics that use the former and allow to …