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    92 repositories

    • queueboard

      Public
      AspectJ
      •
      Apache License 2.0
      •0•0•0•0•Updated Mar 10, 2026Mar 10, 2026

    • mathlib4

      Public
      The math library of Lean 4
      lean4
      lean4
      Lean
      •
      Apache License 2.0
      •1.1k•3k•267•2.3k•Updated Mar 10, 2026Mar 10, 2026

    • blog

      Public
      Source for the community blog
      Python
      •28•8•4•3•Updated Mar 10, 2026Mar 10, 2026

    • azure-scripts

      Public
      scripts and cron jobs for Azure
      Python
      •5•1•0•0•Updated Mar 10, 2026Mar 10, 2026

    • mathlib4-nightly-testing

      Public
      nightly-testing and lean-pr-testing branches of Mathlib
      Lean
      •
      Apache License 2.0
      •1.1k•1•0•17•Updated Mar 10, 2026Mar 10, 2026

    • batteries

      Public
      The "batteries included" extended library for the Lean programming language and theorem prover
      leanlean4
      leanlean4
      Lean
      •
      Apache License 2.0
      •139•364•28•46•Updated Mar 10, 2026Mar 10, 2026

    • mathlib-ci

      Public
      Scripts and utilities to support the mathlib repository's CI/CD operations
      Shell
      •
      Apache License 2.0
      •1•2•0•3•Updated Mar 10, 2026Mar 10, 2026

    • repl

      Public
      A simple REPL for Lean 4, returning information about errors and sorries.
      Lean
      •
      Apache License 2.0
      •66•190•25•19•Updated Mar 10, 2026Mar 10, 2026

    • leanprover-community.github.io

      Public
      Hosts the website for mathlib and other Lean community infrastructure.
      CSS
      •
      MIT License
      •173•74•18•7•Updated Mar 10, 2026Mar 10, 2026

    • mathlib-changelog

      Public
      Lean
      •
      MIT License
      •0•14•3•0•Updated Mar 10, 2026Mar 10, 2026

    • mathlib_stats

      Public
      Display gitstats output on the mathlib website
      Python
      •6•2•0•0•Updated Mar 10, 2026Mar 10, 2026

    • plausible

      Public
      Lean
      •
      Apache License 2.0
      •19•83•0•7•Updated Mar 10, 2026Mar 10, 2026

    • aesop

      Public
      White-box automation for Lean 4
      lean4
      lean4
      Lean
      •
      Apache License 2.0
      •50•342•37•6•Updated Mar 10, 2026Mar 10, 2026

    • import-graph

      Public
      Tool to analyse the import structure of lean projects.
      lean4
      lean4
      Lean
      •
      Apache License 2.0
      •13•18•4•0•Updated Mar 10, 2026Mar 10, 2026

    • ProofWidgets4

      Public
      Helper toolkit for creating your own Lean 4 UserWidgets
      visualizationleanlean4
      visualizationleanlean4
      Lean
      •
      Apache License 2.0
      •44•189•13•1•Updated Mar 9, 2026Mar 9, 2026

    • quote4

      Public
      Intuitive, type-safe expression quotations for Lean 4.
      lean4
      lean4
      Lean
      •
      Apache License 2.0
      •20•101•17•8•Updated Mar 9, 2026Mar 9, 2026

    • queueboard-core

      Public
      testing a split of code and data for the queueboard
      Python
      •
      Apache License 2.0
      •7•2•25•0•Updated Mar 9, 2026Mar 9, 2026

    • physlib

      Public
      A project to digitalise results from physics into Lean.
      physicstheorem-provinglean
      physicstheorem-provinglean
      Lean
      •
      Apache License 2.0
      •80•507•59•11•Updated Mar 9, 2026Mar 9, 2026

    • mathlib4_copy

      Public
      A fork of the mathlib4 repo with CI disabled
      Lean
      •
      Apache License 2.0
      •1.1k•0•0•0•Updated Mar 8, 2026Mar 8, 2026

    • lean4game

      Public
      Server to host lean games.
      reactlean4
      reactlean4
      TypeScript
      •
      GNU General Public License v3.0
      •76•422•111•13•Updated Mar 7, 2026Mar 7, 2026

    • bors-ng

      Public
      👁 A merge bot for GitHub Pull Requests
      Elixir
      •
      Apache License 2.0
      •184•2•0•0•Updated Mar 6, 2026Mar 6, 2026

    • flt-regular

      Public
      Fermat's Last Theorem for regular primes
      Lean
      •
      Apache License 2.0
      •3•62•0•0•Updated Mar 2, 2026Mar 2, 2026

    • iris-lean

      Public
      Lean 4 port of Iris, a higher-order concurrent separation logic framework
      Lean
      •
      Apache License 2.0
      •31•157•17•10•Updated Mar 2, 2026Mar 2, 2026

    • duper

      Public
      lean4
      lean4
      Lean
      •
      Apache License 2.0
      •13•105•1•0•Updated Mar 2, 2026Mar 2, 2026

    • NNG4

      Public
      Natural Number Game
      lean4
      lean4
      Lean
      •
      Apache License 2.0
      •66•293•28•5•Updated Mar 1, 2026Mar 1, 2026

    • archive

      Public
      Replacement for the archive repo
      HTML
      •3•3•1•1•Updated Feb 28, 2026Feb 28, 2026

    • docgen-action

      Public
      Action to generate Lean documentation pages
      JavaScript
      •5•4•8•1•Updated Feb 27, 2026Feb 27, 2026

    • lean-release-tag

      Public
      Action that creates a Git tag when updating to a new Lean release.
      Shell
      •0•1•0•0•Updated Feb 27, 2026Feb 27, 2026

    • con-nf

      Public
      A formal consistency proof of Quine's set theory New Foundations
      set-theorylean4new-foundations
      set-theorylean4new-foundations
      Lean
      •
      Apache License 2.0
      •9•81•1•0•Updated Feb 25, 2026Feb 25, 2026

    • LeanProject

      Public template
      A template for blueprint-driven formalization projects in Lean.
      theorem-provingmathematicsproof-assistant
      theorem-provingmathematicsproof-assistantformal-mathematicsmathematical-programminglean-theorem-proverlean4formalisation-mathematicslean-blueprintformalised-mathematics
      Python
      •
      Apache License 2.0
      •14•98•1•0•Updated Feb 23, 2026Feb 23, 2026