I have been given this space in a question but I am unsure what it means
I know that $S^3=\{(z_1, z_2) \in \mathbb{C^2}\mid |z_{1}|^2 + |z_{2}|^2=1 \}$
Could you help me understand what set of points are contained in $S^3/S^1$ and perhaps what it is homeomorphic to?
Motivation:
