Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
Rather than adding symm hypotheses to the local context, it now adds them to the list of hypotheses derived from the local context. This is not ideal for performance reasons, but it at least closes #3922. In the future, solveByElim could maintain its own cache of facts that it updates whenever it does intro. |
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This is the repository for Lean 4.
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