This is Reservoir, the registry for all Lean packages and documentation.

The math library of Lean 4

Lean certificates accompanying Navier-Stokes and Euler results

A Lean companion to Analysis I

Converts floating point numbers to decimal strings

A collection of formalized statements of conjectures in Lean.

LLMs as Copilots for Theorem Proving in Lean

Ongoing Lean formalisation of the proof of Fermat's Last Theorem

A project to digitalise results from physics into Lean.

The Lean Computer Science Library (CSLib)

Formally verified runtime analysis of evolutionary algorithms in Lean 4 and Mathlib, checked theorem by theorem against the literature.

Web user interfaces written in Lean 4, compiled to WebAssembly (Memory64), with a native Lean server for SSR

A proof of Erdős Problem #173.

λProlog inside Lean 4: write tactics, commands and proof search as logic programs, share types with Lean both ways, and get kernel-checked proofs.

Explicit persistent failure of Euclidean quartic sum-of-squares exactness, formalized in Lean.

Matrix multiplication over rings through integer coefficient schemes

A 7-vertex tournament whose Sperner capacity exceeds the order of its largest transitive subtournament (Lean 4, kernel-only)

A verifier for automated and interactive proofs about transition systems.

Verified computational algebra in Lean 4: aggregator for the released hex libraries

Human-controlled roadmaps for Tau Ceti, an AIs-welcome Lean library downstream of Mathlib.

verification toolchain for TypeScript (Tech Preview)

The Lean Financial Mathematics Library

SampCert : Verified Differential Privacy

A Lean 4 library for formal linguistics: semantics, syntax, pragmatics, morphology, phonology, and processing — formalized across competing frameworks for high interconnection density.

A type-safe, formally verifiable HDL compiler in Lean 4. Inspired by Clash, built for high-assurance hardware synthesis.

A collection of formalized statements of conjectures in Lean.

The math library of Lean 4