The main result is the classification of isotropic surface in Q~3, which shows that one can use the isotropic surface in Q~3 to unify the three different classes of minimal surface with constant scalar curvature in R~3_1,S~3_1,H~3_1.
研究了Lorentz空间R31,S31,H31的紧致化空间Q3上的曲面,并对Q3中的迷向曲面进行分类。
In this article,the author studies the important conception of Poisson groupoids\|coisotropic bisection,and proves some useful results.
本文对Poisson groupoid中较重要的余迷向双截面做了一定的讨论 ,并且得到了一些有用结
We prove first a existence theorem forcoisotropic bisections in .
本文首先证明了一个关于中余迷向双截面（coisotropicbisection）的存在性定理。