Beyond Mathlib

The Lean research ecosystem, in one directory.

Browse 636 source-backed Lean ecosystem records from curated repositories and a pinned Reservoir snapshot. Exact Therefore declaration coverage is labelled separately from package and repository discovery.

Reservoir index b6ac225af74c backs 600 directory records. Provider metadata is discovery evidence, not proof verification or authorship.

34 of 636 projects

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Package metadataTeaching project

Formal2024

Course repository for GlaMS - Formalising Mathematics in Lean (2024)

Declarations not yet indexedLean 4.7.0

Pinned Reservoir package record · checked 2026-07-25

Formalisation Mathematics
Package metadataTeaching project

Calculemus2

Proof exercises in Lean4 and Isabelle/HOL

Declarations not yet indexedLean 4.30.0-rc2

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataTeaching project

pnP2023

Code and source for website for the course "Proofs and Programs", January 2023, Indian Institute of Science

Declarations not yet indexedLean 4.7.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataTeaching project

mk-exercise

Simple and intuitive tool to manage exercises in textbooks written in Lean.

Declarations not yet indexedLean 4.26.0-rc2

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataTeaching project

formalising-mathematics

Course on theorem proving with Lean

Declarations not yet indexedLean 4.16.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataTeaching project

regensburg-itp-school-2023

Materials for my lecture at the 2023 International School on Interactions of Proof Assistants and Mathematics in Regensburg

Declarations not yet indexedLean 4.0.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataTeaching project

HausdorffSchoolLean

Repository for the September 2023 Hausdorff School on Lean

Declarations not yet indexedLean 4.0.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataTeaching project

ITP_course

An Interactive Theorem Proving course with Lean 4

Declarations not yet indexedLean 4.27.0

Pinned Reservoir package record · checked 2026-07-25

Math
Package metadataTeaching project

LogicColloquiumTutorial

The Lean tutorial for Logic Colloquium 2023

Declarations not yet indexedLean nightly-2023-06-20

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataTeaching project

workshop

Repo for the first BerLean workshop.

Declarations not yet indexedLean 4.12.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataTeaching project

msri2023_graphs

Repository for graph theory & combinatorics group at the MSRI Lean summer school

Declarations not yet indexedLean nightly-2023-06-10

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataTeaching project

LeanLion

Code for Singapore Workshop on Formal Proofs and Lean

Declarations not yet indexedLean 4.22.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataTeaching project

Monad

Notes for the category theory class I'm teaching at MIT (Jan 2026)

Declarations not yet indexedLean 4.29.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Math
Package metadataTeaching project

lean-autograd

Automatic differentiation in Lean following JAX's autodidax tutorial

Declarations not yet indexedLean nightly

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataTeaching project

LAGinLean

Questions related to Imperial College's Linear Algebra and Groups course running in November and December 2024.

Declarations not yet indexedLean 4.7.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataTeaching project

ExtremeValueProject

A project to formalize Fisher-Tippett-Gnedenko theorem (default project of course MS-EV0029)

Declarations not yet indexedLean 4.32.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Lean package