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Theorem rel.mem_preimage

Modification history

2021-08-17 18:30
src/data/rel.lean
docs(order/filter/partial): add module docstring (#8620) …
Modified rel.mem_preimageView on Github →
2019-02-08 09:28
data/rel.lean
feat(data/rel): a type for binary relations
Added rel.mem_preimageView on Github →