Singular CR structures of constant Webster curvature and applications

Chiara Guidi, Ali Maalaoui, Vittorio Martino

We consider the sphere $\Sph^{2n+1}$ equipped with its standard CR structure. In this paper we construct explicit contact forms on $\Sph^{2n+1}\setminus \Sph^{2k+1}$, which are con…