Yun Zhang
Abstract
Let M be an n dimensional completely non compact spacelike hypersurface in de Sitter space S n+1 1(1) with constant mean curvature and nonnegative sectional curvature,it is isometric to a hyperbolc cylender or Euclidean space under some conditions.
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Let M be an n dimensional completely non compact spacelike hypersurface in de Sitter space S n+1 1(1) with constant mean curvature and nonnegative sectional curvature,it is isometric to a hyperbolc cylender or Euclidean space under some conditions.
Key concepts: Sectional curvature, Mean curvature, Mathematics, Hypersurface, Curvature, Mathematical analysis, De Sitter space, Constant (computer programming)