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Theorem exists_open_singleton_of_open_finset

Modification history

2022-05-23 01:49
src/topology/separation.lean
chore(topology/separation): golf some proofs (#14279) …
Deleted exists_open_singleton_of_open_finsetView on Github →
2020-05-13 03:44
src/topology/separation.lean
feat(topology/separation): add `subtype.t1_space` and `subtype.regular` (#2667) …
Added exists_open_singleton_of_open_finsetView on Github →