Free and properly discontinuous actions of groups on homotopy $2n$-spheres

Marek Golasinski, Daciberg Lima Goncalves, Rolando Jimenez

Let $G$ be a group acting freely, properly discontinuously and cellularly on a finite dimensional $C$W-complex $\Sigma (2n)$ which has the homotopy type of the $2n$- sphere $\mathbb{S}^{…