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v3
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Mathlib v3 is deprecated.
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Theorem
is_open.inter_frontier_eq
Modification history
2021-03-29 23:43
src/topology/basic.lean
feat(topology/local_homeomorph): add `is_image`, `piecewise`, and `disjoint_union` (#6804) …
Added
is_open.inter_frontier_eq
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