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HONG Taoqing, ZHANG Jianfeng
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Abstract: We obtained one sufficient condition under which a 2-harmonic submanifold with nonnegative sectioncurvature turns into a maximal submanifold by promoting known theorem. And We also studied the 2-harmonic hypersurfaces by weakening the conditions when the Ricci curvature of the ambient manifold had upper and lower restrict, thus improving the known results.
Key words: pseudoRiemann manifold, 2-harmonic map, mean curvature vector, spacelike submanifold, hypersurface
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HONG Taoqing, ZHANG Jianfeng. 2-Harmonic Spacelike Submanifolds in PseudoRiemann Manifold[J].J4, 2009, 47(02): 257-260.
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http://xuebao.jlu.edu.cn/lxb/EN/Y2009/V47/I02/257
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