1) closed manifold
闭流形
1.
The homotogy invariance of the Stiefel-Whitney classes of closed manifolds have broved by making use of the cohomogy operation and the properties of Wu classes.
利用流形的上同调运算及吴类的性质 ,证明了闭流形的 Stiefel-Whitney类的同伦不变
2) closed submanifold
闭子流形
1.
In this paper, we first prove a generalized Simons integral inequality for closed submanifolds in a Riemannian manifold with bounded sectional cruvature.
证明了截面曲率有界的 Riemann流形中闭子流形的一个广义 Simons型积分不等式 ,其次建立了 S,|H|,| ⊥ H|与闭子流形特征的一个关系 ,结论推广了 Chern[1 ] ,Li[2 ]和 Xu[3 ]中相应的结果 。
2.
In this paper, by using the method in [1], the closed submanifolds with non zero parallel mean curveture vector in unit sphere is studied.
利用文 [1]的方法 ,研究了单位球面中具有非零平行平均曲率向量的闭子流形 ,得知在其第二基本形式长度平方与其平均曲率满足一定的条件下 ,闭子流形为小球面 ,Clifford环面 。
3) closed pseudomanifold
闭伪流形
4) closed combinatorial manifold
闭组合流形
5) closed two-dimensional manifold
闭二维流形
6) closed differentiable manifold
闭微分流形
补充资料:闭流形
闭流形
dosed manifold
闭流形【d.姆d m.‘翻d;3a袱“yToe姗oroo6pa3.e」 紧无边流形(见边界(流形的)(boundary(of a ma-nifold))).例如,一个k维紧流形的所有边界点的集合是一个(k一l)维闭流形.徐森林译
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