condition of positivity

We also show that all quasi-ideal adequate transversals of an abundant semigroup which satisfies regularity condition are mutually isomorphic.

关于富足半群我们证明了:满足正则性条件的富足半群若含有拟理想恰当断面,则其所有拟理想恰当断面均同构。

In this paper, using real QZ technique, a standard form of the descriptor system (even if the regularize condition is not satisfied) has posed.

本文采用实QZ分解技术给出了广义系统（可以不满足正规性条件）的一种标准形，此标准形与某一状态空间形系统有相同的阶与传递函数。

Based on the method of reference , an improved method has been developed which identifies the mechanical structural joint parameters using the imaginary part equations of the orthogonality relation equations.

本文在文献［１］所提出的基于正交性条件识别机械结构结合面阻尼参数方法的基础上，进一步提出采用正交条件式中虚部方程识别结合面动力学参数的方法。