Abstract:
In this paper, we shall give an integral equality by applying the operator □ introduced by S.Y. Cheng and S.T. Yau [7] to compact spacelike hypersurfaces which are immersed in de Sitter space S n +1 1(c) and have constant scalar curvature. By making use of this integral equality, we show that such a hypersurface with constant scalar curvature n(n-1)r is isometric to a sphere if r << c.
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Received: 18 December 1996 / Revised version: 26 November 1997
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Cheng, QM., Ishikawa, S. Spacelike hypersurfaces with constant scalar curvature . manuscripta math. 95, 499–505 (1998). https://doi.org/10.1007/s002290050043
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DOI: https://doi.org/10.1007/s002290050043