Lean 4 programming language and theorem prover

The math library of Lean 4

LLMs as Copilots for Theorem Proving in Lean

Tool for data extraction and interacting with Lean programmatically.

Lean theorem proving interface which feels like pen-and-paper proofs.

Scientific computing in Lean 4

Neovim support for the Lean theorem prover

The "batteries included" extended library for the Lean programming language and theorem prover

Retrieval-Augmented Theorem Provers for Lean

White-box automation for Lean 4

Lecture notes for a course on writing proofs, on paper and in the Lean proof assistant

Server to host lean games.

Theorem Proving in Lean 4

Tactics for discharging Lean goals into SMT solvers.

A simple raytracer written in Lean 4

Natural Number Game

Catalog Of Math Problems Formalized In Lean

Helper toolkit for creating your own Lean 4 UserWidgets

llmstep: [L]LM proofstep suggestions in Lean 4.