Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
7c76dbf6be
This PR adds typeclasses for `grind` to embed types into `Int`, for cutsat. This allows, for example, treating `Fin n`, or Mathlib's `ℕ+` in a uniform and extensible way. There is a primary typeclass that carries the `toInt` function, and a description of the interval the type embeds in. There are then individual typeclasses describing how arithmetic/order operations interact with the embedding. |
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