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Theorem is_closed.is_Gδ'

Modification history

2021-10-23 17:11
src/topology/G_delta.lean
refactor(order/filter/bases): turn `is_countably_generated` into a class (#9838) …
Deleted is_closed.is_Gδ'View on Github →
2021-10-16 18:01
src/topology/G_delta.lean
feat(topology/G_delta): add lemmas, minor golf (#9742) …
Added is_closed.is_Gδ'View on Github →