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Theorem singleton_has_groupoid

Modification history

2021-04-14 18:40
src/geometry/manifold/charted_space.lean
feat(geometry/manifold/instances/units_of_normed_algebra): the units of a normed algebra are a topological group and a smooth manifold (#6981) …
Deleted singleton_has_groupoidView on Github →
2020-07-12 07:43
src/geometry/manifold/charted_space.lean
feat(geometry/manifold/charted_space): typeclass `closed_under_restriction` for structure groupoids (#3347) …
Added singleton_has_groupoidView on Github →