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Theorem is_open_map.image_mem_nhds

Modification history

2021-01-15 10:58
src/topology/maps.lean
feat(analysis/calculus/inverse): a map that has an invertible strict derivative at every point is an open map (#5753) …
Modified is_open_map.image_mem_nhdsView on Github →
2020-02-18 09:33
src/topology/maps.lean
refactor(topology/maps): split the proof of `is_open_map_iff_nhds_le` (#2007) …
Added is_open_map.image_mem_nhdsView on Github →