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Theorem is_closed_Union

Modification history

2023-03-26 01:05
src/topology/basic.lean
chore(topology/basic): backport another generalization to `Sort*` (#18660) …
Modified is_closed_UnionView on Github →
2022-08-10 05:50
src/topology/basic.lean
chore(topology/*): Use `finite` in place of `fintype` where possible (#15891) …
Modified is_closed_UnionView on Github →
2019-06-03 22:11
src/topology/basic.lean
feat(topology/basic): is_open_Inter and others (#1108)
Modified is_closed_UnionView on Github →
2017-08-10 16:41
topology/topological_space.lean
rename open -> is_open, closed -> is_closed
Added is_closed_UnionView on Github →