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.

433 of 636 projects

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Package metadataLean library

LogicQ

An IR language for fault-tolerant quantum programming

Declarations not yet indexedLean 4.29.1

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

m2r-group-7

Classifying Groups of Order up to 31 in Lean 4 - Imperial Maths Year 2 Research Project Group 7 - 2026

Declarations not yet indexedLean 4.29.1

Pinned Reservoir package record · checked 2026-07-25

Math
Package metadataLean library

advents

Advent of Code

Declarations not yet indexedLean 4.26.0-rc2

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

huffman

Huffman coding in Lean 4 with a formal optimality proof and Unix pack/unpack (.z) compatibility.

Declarations not yet indexedLean 4.31.0

Pinned Reservoir package record · checked 2026-07-25

CompressionFormal VerificationHuffmanPack
Package metadataLean library

delphin

The Lean port of PyDelphin, a library to integrate DELPH-IN toolsets

Declarations not yet indexedLean 4.12.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

VerificationDemo

A temporary repository

Declarations not yet indexedLean 4.13.0-rc3

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

interest

Interest: a Lean library for financial mathematics

Declarations not yet indexedLean 4.31.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

math654

Homework and lecture notes from Math 654, Fall 2022

Declarations not yet indexedLean 4.27.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Math
Package metadataLean library

lean4-project

A minimal Lean 4 development environment using VSCode DevContainer.

Declarations not yet indexedLean 4.28.0

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

Iterator

In this repository, I work on the Lean iterator library that is supposed to become part of the standard library.

Declarations not yet indexedLean 4.20.0-rc5

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

bppl

Probabilistic Separation Logic

Declarations not yet indexedLean 4.28.0

Pinned Reservoir package record · checked 2026-07-25

Math
Package metadataLean library

Crypto

Implementation of various cryptographic functions in Lean4

Declarations not yet indexedLean 4.7.0

Pinned Reservoir package record · checked 2026-07-25

CryptographyElliptic Curves
Package metadataLean library

Hoare

Hoare Logic in Lean

Declarations not yet indexedLean 4.22.0-rc2

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

FMCn_Lean

Repositório destinado às práticas de Lean4 da Monitoria de FMCn.

Declarations not yet indexedLean stable

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

crup

A Checker for RUP proofs written in Lean 4

Declarations not yet indexedLean 4.3.0

Pinned Reservoir package record · checked 2026-07-25

RupSat
Package metadataLean library

http-client

A Curl wrapper written in Lean 4 to be used as a http-client in lean 4 projects

Declarations not yet indexedLean 4.25.2

Pinned Reservoir package record · checked 2026-07-25

Lean package
Package metadataLean library

mathmatic_in_elementary_number_th

初等数论讲义的形式化证明 by lean4

Declarations not yet indexedLean 4.24.0-rc1

Pinned Reservoir package record · checked 2026-07-25

Math
Package metadataLean library

sgc

Lean 4 library characterizing the algebraic structure of metastability and consolidation in stochastic systems

Declarations not yet indexedLean 4.25.2

Pinned Reservoir package record · checked 2026-07-25

Lean package