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Theorem
set.subsingleton_empty
Modification history
2021-03-16 21:43
src/data/set/basic.lean
feat(topology/separation): `(closure s).subsingleton ↔ s.subsingleton` (#6707) …
Modified
set.subsingleton_empty
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2020-02-03 07:14
src/data/set/basic.lean
refactor(topology/metric_space/emetric_space): redefine `diam` (#1941) …
Modified
set.subsingleton_empty
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2020-02-02 10:49
src/data/set/basic.lean
feat(data/set/basic): define `set.subsingleton` (#1939) …
Added
set.subsingleton_empty
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