Under some regular conditions, a proposed estimator is proved to be asymptotically normal and convergent rate. 在一些正則條件下證明了該估計量的漸近正態性，同時給出估計量的收斂速度。
But during the feedback control,the selection of the defferent feedback factors may make the change of the system's regularity. 但是在系統的反饋控制中，選擇不同的反饋因子，則系統的正則性可能會被改變。
We shall use algebraic methods to study graphs which are highly regular although this regularity is not expressed in terms of the automorphism group. 我們將用代數方法來研究高度正則的圖，儘管這種正則性不是用自同構群來表達的。
