Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
faed852c2f
This PR implements (nested term) equality propagation in `grind order`.
That is, it propagates implied equalities from `grind order` back to the
`grind` core. Examples:
```lean
open Lean Grind Std
example [LE α] [IsPartialOrder α] (a b : α) (f : α → Nat) : a ≤ b → b ≤ c → c ≤ a → f a = f b := by
grind (splits := 0)
example [CommRing α] [LE α] [LT α] [LawfulOrderLT α] [IsPartialOrder α] [OrderedRing α]
(a b : α) (f : α → Int) : a ≤ b + 1 → b ≤ a - 1 → f a = f (2 + b - 1) := by
grind -mbtc -lia -linarith (splits := 0)
example (a b : Int) (f : Int → Int) : a ≤ b + 1 → b ≤ a - 1 → f a = f (2 + b - 1) := by
grind -mbtc -lia -linarith (splits := 0)
```
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| .github | ||
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| images | ||
| 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 | ||
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