证明复Grassman流形中的齐性三维球面可以作为一个三维的ρ(SU(2))轨道,然后利用SU(2)和SU(2)×SU(2)的表示理论给出具体构造这种齐性三维球面的方法。
In this paper,we show that any homogeneous 3-sphere in complex Grassmanians must be a 3-dimensional ρ( SU( 2))-orbit in complex Grassmanians. Then we use the representation theory of SU( 2) and SU( 2) × SU( 2) to present a method for the construction of homogeneous 3-spheres in complex Grassmanians.