On the structure of hypersurfaces in ${\mathbb{H}}^n\times \mathbb{R}$ with finite strong total curvature

We prove that if $X:M^n\to {\mathbb{H}}^n\times \mathbb{R}$, $n\ge 3$, is a an orientable, complete immersion with finite strong total curvature, then $X$ is proper and $M$ is diffeomorphic to a compact manifold $\bar{M}$ minus a finite number of points $q_1,\dots q_k$. Adding some extra hypothesis, including $H_r=0,$ where $H_r$ is a higher order mean curvature, we obtain more information about the geometry of a neighbourhood of each puncture. The reader will also find in this paper a classification result for the hypersurfaces of ${\mathbb{H}}^n\times \mathbb{R}$ which satisfy $H_r=0$ and are invariant by hyperbolic translations and a maximum principle in a half space for these hypersurfaces.