The notion of finite type submanifolds was introduced by B. Y. Chen. In this paper we consider the characteristics and the classifications of finite type non-minimal submanifolds. The characteristic theorems of 2-type...The notion of finite type submanifolds was introduced by B. Y. Chen. In this paper we consider the characteristics and the classifications of finite type non-minimal submanifolds. The characteristic theorems of 2-type Chen submanifolds,mass-symmetrie hypersurfaces and Dupin hypersurfaces in E_3~m are obtained. The classification theorems of 3-type hypersurfaces and null 2-type curves in E_3~m are also proved.展开更多
你,永远是自己生命中相交时间最长的人;但,究竟你对自己的认识有多少呢?今次介绍的这个测试,是在美国收视率最高的真人 Show 节目中,黑人女名嘴主持欧普拉(Oprah 着 Winfrey)向全美观众推介的。这个测试是由美国着名心理学家为当地的大...你,永远是自己生命中相交时间最长的人;但,究竟你对自己的认识有多少呢?今次介绍的这个测试,是在美国收视率最高的真人 Show 节目中,黑人女名嘴主持欧普拉(Oprah 着 Winfrey)向全美观众推介的。这个测试是由美国着名心理学家为当地的大机构设计,作用是在聘请新员工时,一定要让应徵者先进行测试才决定录用与否。虽则你跟我都不是美国大机构的人事部要员,但透过测试,你可知道自己在别人眼中的"真我",从而有助自己取长补短,让今后活得更出色。展开更多
基金Supported by the National Fundations of Natural sciences. Supported by the Henan Fundations of Scientific Committee.
文摘The notion of finite type submanifolds was introduced by B. Y. Chen. In this paper we consider the characteristics and the classifications of finite type non-minimal submanifolds. The characteristic theorems of 2-type Chen submanifolds,mass-symmetrie hypersurfaces and Dupin hypersurfaces in E_3~m are obtained. The classification theorems of 3-type hypersurfaces and null 2-type curves in E_3~m are also proved.
文摘你,永远是自己生命中相交时间最长的人;但,究竟你对自己的认识有多少呢?今次介绍的这个测试,是在美国收视率最高的真人 Show 节目中,黑人女名嘴主持欧普拉(Oprah 着 Winfrey)向全美观众推介的。这个测试是由美国着名心理学家为当地的大机构设计,作用是在聘请新员工时,一定要让应徵者先进行测试才决定录用与否。虽则你跟我都不是美国大机构的人事部要员,但透过测试,你可知道自己在别人眼中的"真我",从而有助自己取长补短,让今后活得更出色。
