Let $X$ be an $m$-dimensional simply connected manifold that is also a G-space. If the action is properly discontinuous, is $X/G$ necessarily a manifold?
Do you have a hint for this one?
Let $X$ be an $m$-dimensional simply connected manifold that is also a G-space. If the action is properly discontinuous, is $X/G$ necessarily a manifold?
Do you have a hint for this one?