Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
bc47aa180b
This PR uses `grind` to shorten some proofs in the LRAT checker. The intention is not particularly to improve the quality or maintainability of these proofs (although hopefully this is a side effect), but just to give `grind` a work out. There are a number of remaining notes, either about places where `grind` fails with an internal error (for which #8608 is hopefully representative, and we can fix after that), or `omega` works but `grind` doesn't (to be investigated later). Only in some of the files have I thoroughly used grind. In many files I've just replaced leaves or branches of proofs with `grind` where it worked easily, without setting up the internal annotations in the LRAT library required to optimize the use of `grind`. It's diminishing returns to do this in a proof library that is not high priority, so I've simply drawn a line. |
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