Under some regular conditions, a proposed estimator is proved to be asymptotically normal and convergent rate. 在一些正则条件下证明了该估计量的渐近正态性，同时给出估计量的收敛速度。
But during the feedback control,the selection of the defferent feedback factors may make the change of the system's regularity. 但是在系统的反馈控制中，选择不同的反馈因子，则系统的正则性可能会被改变。
We shall use algebraic methods to study graphs which are highly regular although this regularity is not expressed in terms of the automorphism group. 我们将用代数方法来研究高度正则的图，尽管这种正则性不是用自同构群来表达的。
