On almost cosymplectic Lorentzian hypersurfaces immersed in a Lorentzian manifold

Hypersurfaces with Constant Mean Curvature in a Lorentzian Space Form

Hypersurfaces of Prescribed Curvature in Lorentzian Manifolds

The existence of closed hypersurfaces of prescribed curvature in globally hyperbolic Lorentzian manifolds is proved provided there are barriers.

The Mass of a Lorentzian Manifold

We define a physically reasonable mass for an asymptotically Robertson-Walker (ARW) manifold which is uniquely defined in the case of a normalized representation.

hypersurfaces with constant mean curvature in a lorentzian space form

Hypersurfaces of Prescribed Mean Curvature in Lorentzian Manifolds

We give a new existence proof for closed hypersurfaces of prescribed mean curvature in Lorentzian manifolds.