Mathlib v3 is deprecated. Go to Mathlib v4

Theorem set.countable_singleton

Modification history

2022-06-22 18:31
src/data/set/countable.lean
refactor(data/set/countable): make `set.countable` protected (#14886) …
Modified set.countable_singletonView on Github →
2018-07-17 00:30
data/set/countable.lean
refactor(data/set/countable): define countable in terms of encodable
Modified set.countable_singletonView on Github →
2017-09-28 18:07
data/set/countable.lean
feat(topology): add Borel spaces
Modified set.countable_singletonView on Github →
2017-09-22 12:52
data/set/countable.lean
feat(data/set): add functions over sets
Modified set.countable_singletonView on Github →
2017-09-22 12:31
data/set/countable.lean
feat(topology/topological_space): add countablility and separability axioms for topological spaces
Modified set.countable_singletonView on Github →
2017-09-10 23:28
data/set/countable.lean
feat(data/set): add countable sets
Added set.countable_singletonView on Github →