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Theorem
interior_union_is_closed_of_interior_empty
Modification history
2021-01-14 08:39
src/topology/basic.lean
chore(*): split some long lines (#5742)
Modified
interior_union_is_closed_of_interior_empty
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2017-08-10 16:41
topology/topological_space.lean
rename open -> is_open, closed -> is_closed
Added
interior_union_is_closed_of_interior_empty
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