## The quotient space of the complex projective plane under conjugation is a 4-sphere.(English)Zbl 0273.57019

### MSC:

 57S25 Groups acting on specific manifolds 57N15 Topology of the Euclidean $$n$$-space, $$n$$-manifolds ($$4 \leq n \leq \infty$$) (MSC2010)
Full Text: