%0 Journal Article
%T On 2-Harmonic Space-Like Submanifolds of a Locally Symmtric Pseudo-Rimannian Manifold<br>关于局部对称伪黎曼流形中的2-调和类空子流形
%A Song Weidong
%A Jiang Juli
%A <br>宋卫东
%A 江桔丽
%J 系统科学与数学
%D 2007
%I 
%X Let Npn+p be a locally symmetric pseudo-Riemanian manifold, whose sectional curvatrue KN satisties $0<\delta\leqslant KN\leqslant1$. Let Mn be a 2-harmonic space-like submanifold in Npn+p. In this paper, we obtain a pinching theorem for the square of the length of the second fundamental form and an integral formula.
%K Pseudo-Riemannian manifold
%K locally symmetric
%K 2-harmonic space-like submanifold
%K integral formula<br>伪黎曼流形
%K 局部对称
%K 2-调和映照
%K 极大类空
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=37F46C35E03B4B86&jid=0CD45CC5E994895A7F41A783D4235EC2&aid=BFBC2246703224FE&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=0B39A22176CE99FB&sid=C5F8B8CB20F1B3D8&eid=5BC9492E1D772407&journal_id=1000-0577&journal_name=系统科学与数学&referenced_num=0&reference_num=6