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Sponsored by the Center for Science and Technology Development of the Ministry of Education
Supervised by Ministry of Education of the People's Republic of China
In this paper we investigate spacelike hypersurfaces $M$ with
constant $r$-th mean curvature and two distinct principal curvatures
in anti-de Sitter space $\\mathbb{H}^{n+1}_1(c)$. We give some
characterizations of the hyperbolic cylinders in
$\\mathbb{H}^{n+1}_1(c)$.
Keywords:anti-de Sitter space;spacelike hypersurfaces;constant $r$-th mean curvature