Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
2d8de4235d
This PR implements model-based theory combination for types `A` which
implement the `ToInt` interface. Examples:
```lean
example {C : Type} (h : Fin 4 → C) (x : Fin 4)
: 3 ≤ x → x ≤ 3 → h x = h (-1) := by
grind
example {C : Type} (h : UInt8 → C) (x y z w : UInt8)
: y + 1 + w ≤ x + w → x + w ≤ z → z ≤ y + w + 1 → h (x + w) = h (y + w + 1) := by
grind
example {C : Type} (h : Fin 8 → C) (x y w r : Fin 8)
: y + 1 + w ≤ r → r ≤ y + w + x → x = 1 → h r = h (y + w + 1) := by
grind
```
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| CMakeLists.txt | ||
| CMakePresets.json | ||
| CODEOWNERS | ||
| CONTRIBUTING.md | ||
| flake.lock | ||
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| lean-toolchain | ||
| lean.code-workspace | ||
| LICENSE | ||
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| README.md | ||
| RELEASES.md | ||
This is the repository for Lean 4.
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