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Def hall_finset_directed_order

Modification history

2022-01-12 22:49
src/combinatorics/hall/basic.lean
refactor(order/directed): Make `is_directed` a Prop mixin (#11238) …
Deleted hall_finset_directed_orderView on Github →
2021-10-13 21:29
src/combinatorics/hall/basic.lean
feat(combinatorics/hall): generalized Hall's Marriage Theorem (#7825) …
Added hall_finset_directed_orderView on Github →