Complete constant mean curvature spacelike hypersurfaces in the   Einstein-de Sitter spacetime
  Uniqueness and non-existence results on complete constant mean curvature spacelike hypersurfaces lying between two spacelike slice in the Einstein-de Sitter spacetime are given. They are obtained from a Liouvielle-type theorem applied to a distinguished smooth function on a constant mean curvature hypersurface. 
Rafael M. Rubio
math-ph math.MP