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Theorem covariant_le_iff_contravariant_lt

Modification history

2021-06-13 11:45
src/algebra/covariant_and_contravariant.lean
feat(algebra/covariant_and_contravariant): API for covariant_and_contravariant (#7889) …
Added covariant_le_iff_contravariant_ltView on Github →