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Theorem
topological_space.is_topological_basis.exists_mem_of_ne
Modification history
2022-06-08 09:31
src/topology/separation.lean
feat(topology/algebra/order/basic): in a second-countable linear order, only countably many points are isolated to the right (#14564) …
Added
topological_space.is_topological_basis.exists_mem_of_ne
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