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Theorem
topological_space.is_open_sUnion_countable
Modification history
2019-03-03 19:05
src/topology/bases.lean
chore(topology): Splits topology.basic and topology.continuity (#785) …
Modified
topological_space.is_open_sUnion_countable
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2018-07-19 15:34
analysis/topology/topological_space.lean
feat(analysis/measure_theory): optimize proofs; trim, is_complete
Added
topological_space.is_open_sUnion_countable
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