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Def contravariant.to_left_cancel_semigroup

Modification history

2022-05-07 04:45
src/algebra/order/monoid_lemmas.lean
refactor(algebra/order/monoid_lemmas): reorder the file (#13492) …
Modified contravariant.to_left_cancel_semigroupView on Github →
2021-06-23 09:25
src/algebra/ordered_monoid_lemmas.lean
feat(algebra/ordered_monoid_lemmas + fixes): consistent use of `covariant` and `contravariant` in `ordered_monoid_lemmas` (#7876) …
Added contravariant.to_left_cancel_semigroupView on Github →