Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
c195d7c2a1
- An new simp attribute may depend on other existing attributes - Add `[norm]` simp attribute. It is an extension of the default `[simp]` attribute. It should be used to add extra rules for normalizing goals. These extra rules are used to produce normal forms and/or reduce the number of constants used in a goal. Here is an example coming from a discussion with @kha. When working with monads, we may want to eliminate `<$>` by using the lemma `f <$> x = x >>= pure ∘ f`. This lemma is in the `[norm]` simp set, but it is not in `[simp]` |
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- C++11 compatible compiler
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- GMP (GNU multiprecision library)
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