Lifting in compact covering spaces for fractional Sobolev mappings

Petru Mironescu, Jean Van Schaftingen

Let $\pi :\tilde{\mathcal{N}}\to \mathcal{N}$ be a Riemannian covering, with $\mathcal{N}$, $\tilde{\mathcal{N}}$ smooth compact connected Riemannian manifolds. If $\mathcal…