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Theorem set.countable_iff_exists_subset_range

Modification history

2022-07-23 17:07
src/data/set/countable.lean
refactor(data/set/countable): golf using `_root_.countable`, review API (#15624) …
Modified set.countable_iff_exists_subset_rangeView on Github →
2022-07-19 23:27
src/data/set/countable.lean
refactor(data/set/countable): rename some lemmas (#15527) …
Added set.countable_iff_exists_subset_rangeView on Github →