机译:de Sitter空间中具有恒定标量曲率的完整类空子流形
Colleye;
of;
Mathematics;
and;
Information;
Science,;
Northwest;
Normal;
University,;
Lanzhou;
730070,China;
Department;
of;
Mathematics,;
Hexi;
University,;
Zhangye;
734000,;
China;
Sitter空间; 常数量曲率; 子流形; 西特; 类空; 国民党; 全脐; 余维;