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Theorem
frontier_Ici_subset
Modification history
2022-05-04 11:10
src/topology/algebra/order/basic.lean
feat(order/basic): Notation for `order_dual` (#13798) …
Modified
frontier_Ici_subset
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2021-03-09 21:43
src/topology/algebra/ordered.lean
feat(topology/constructions): frontier/interior/closure in `X × Y` (#6594)
Added
frontier_Ici_subset
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