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Theorem is_closed_singleton

Modification history

2019-03-03 19:05
src/topology/basic.lean
chore(topology): Splits topology.basic and topology.continuity (#785) …
Modified is_closed_singletonView on Github →
2017-08-10 16:41
topology/topological_space.lean
rename open -> is_open, closed -> is_closed
Added is_closed_singletonView on Github →