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Def covariant

Modification history

2021-06-11 21:18
src/algebra/covariant_and_contravariant.lean
chore(algebra/{covariant_and_contravariant + ordered_monoid_lemmas}): new file covariant_and_contravariant (#7890) …
Modified covariantView on Github →
2021-05-15 16:28
src/algebra/ordered_monoid_lemmas.lean
feat(algebra/{ordered_monoid, ordered_monoid_lemmas}): split the `ordered_[...]` typeclasses (#7371) …
Added covariantView on Github →