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Theorem ext_chart_at_map_nhds

Modification history

2022-12-02 20:41
src/geometry/manifold/smooth_manifold_with_corners.lean
feat(geometry/manifold/smooth_manifold_with_corners): define local_homeomorph.extend (#17669) …
Deleted ext_chart_at_map_nhdsView on Github →
2021-02-28 22:54
src/geometry/manifold/smooth_manifold_with_corners.lean
feat(geometry/manifold): `ext_chart_at` is smooth on its source (#6473)
Added ext_chart_at_map_nhdsView on Github →