应用算子矩阵和算子分块技巧,研究了具有相同等价类的子空间的一些性质.分别获得了等价类dim gM和dim gN,投影算子PM和PN,以及该投影算子的谱之间的一些关系.
Using the notion of unitary equivalent, we explore the conditions on possible equation of dim gM = dim gN and show it depends on spectral properties of the projection operators.