Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
2ed77f3b26
This PR introduces the parametric attribute `[grind]` for annotating theorems and definitions. It also replaces `[grind_eq]` with `[grind =]`. For definitions, `[grind]` is equivalent to `[grind =]`. The new attribute supports the following variants: - **`[grind =]`**: Uses the left-hand side of the theorem's conclusion as the pattern for E-matching. - **`[grind =_]`**: Uses the right-hand side of the theorem's conclusion as the pattern for E-matching. - **`[grind _=_]`**: Creates two patterns. One for the left-hand side and one for the right-hand side. - **`[grind →]`**: Searches for (multi-)patterns in the theorem's antecedents, stopping once a usable multi-pattern is found. - **`[grind ←]`**: Searches for (multi-)patterns in the theorem's conclusion, stopping once a usable multi-pattern is found. - **`[grind]`**: Searches for (multi-)patterns in both the theorem's conclusion and antecedents. It starts with the conclusion and stops once a usable multi-pattern is found. The `grind_pattern` command remains available for cases where these attributes do not yield the desired result. |
||
|---|---|---|
| .github | ||
| doc | ||
| images | ||
| nix | ||
| releases_drafts | ||
| script | ||
| src | ||
| stage0 | ||
| tests | ||
| .gitattributes | ||
| .gitignore | ||
| .gitpod.Dockerfile | ||
| .gitpod.yml | ||
| .ignore | ||
| CMakeLists.txt | ||
| CMakePresets.json | ||
| 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
- Documentation Overview
- Language Reference
- 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 (documentation source: doc/make/index.md).