Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
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This is the repository for Lean 4, which is currently being released as milestone releases towards a first stable release. Lean 3 is still the latest stable release.
About
- Quickstart
- Walkthrough installation video
- Quick tour video
- Homepage
- Theorem Proving Tutorial
- Functional Programming in Lean first chapter is available!
- Manual
- Release notes starting at v4.0.0-m3
- Examples
- FAQ
Installation
See Setting Up Lean.
Contributing
Please read our Contribution Guidelines first.
Building from Source
See Building Lean.