Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
466ef74ccc
This extends `derive_functional_induction` to work with structural recursion as well. It produces the less general, more concrete induction rule where the induction hypothesis is specialized for every argument of the recursive call, not just the the one that the function is recursing on. Care is taken so that the induction principle and it's motive take the arguments in the same order as the original function. While I was it, also makes sure that the order of the cases in the induction principle matches the order of recursive calls in the function better. --------- Co-authored-by: David Thrane Christiansen <david@davidchristiansen.dk> Co-authored-by: Leonardo de Moura <leomoura@amazon.com> |
||
|---|---|---|
| .github | ||
| doc | ||
| images | ||
| nix | ||
| script | ||
| src | ||
| stage0 | ||
| tests | ||
| .gitattributes | ||
| .gitignore | ||
| .ignore | ||
| CMakeLists.txt | ||
| CODEOWNERS | ||
| CONTRIBUTING.md | ||
| flake.lock | ||
| flake.nix | ||
| lean-toolchain | ||
| lean.code-workspace | ||
| LICENSE | ||
| LICENSES | ||
| README.md | ||
| RELEASES.md | ||
This is the repository for Lean 4.
About
- Quickstart
- Homepage
- Theorem Proving Tutorial
- Functional Programming in Lean
- Manual
- Release notes starting at v4.0.0-m3
- Examples
- External Contribution Guidelines
- FAQ
Installation
See Setting Up Lean.
Contributing
Please read our Contribution Guidelines first.
Building from Source
See Building Lean.