Semi - symmetric spacelike hypersurfaces in de sitter space 空间中半对称的类空超曲面
2.
Compact maximal spacelike submanifolds in a de sitter space 空间中的紧致极大类空子流形
3.
Asymptotic direction and asymptotic curve of spacelike surface in r 1中类空曲面的渐近方向与渐近曲线
4.
There is a factor which depends on the breaking scale in the formula of angle of deflection of timelike and spacelike test particles in this kind of cold stars . it is a possible observational effect for astrophysics 对于这类冷天体的类光和类时测试粒子的偏转角公式存在一个依赖于破缺标度的因子。这是一个可能的天体物理观测效应。
