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
In this paper we build a class of partial differential operators L having the following property : if u is a meromorphic function in C^n and Lu is a rational function A/q, with q homogenous, then u is also a rational ...In this paper we build a class of partial differential operators L having the following property : if u is a meromorphic function in C^n and Lu is a rational function A/q, with q homogenous, then u is also a rational function.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In this paper we build a class of partial differential operators L having the following property : if u is a meromorphic function in C^n and Lu is a rational function A/q, with q homogenous, then u is also a rational function.
