I have found that arbitrary real n-spheres cannot be contracted to a point, at least that's what I found on wiki. But I am wondering if a manifold in $\mathbb{C}^n$ given by $|z_1|^2 + |z_2|^2 + ... + |z_n|^2 =1$ can be deformed continuously into one of the z's on the manifold, say, $z_{n'}$. Is such a deformation possible?
Thanks in advance,

