Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
c61ced3f15
This introduces a notion of synthetic atoms into `bv_decide`'s reflection framework. An atom can be declared synthetic if its behavior is fully specified by additional lemmas that are added in the process of creating it. This is for example useful in the code that handles `if` as the entire `if` block is abstracted as an atom and then two lemmas to describe either branch are added. Previously this had the effect of creating error messages about potentially unsound counterexamples, now the synthetic atoms get filtered from the counter example generation. |
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