It is shown that if a generalized symmetricsystem is controllable on a neighborhood of a point, then the system is controllable on some open set which includes the group action-orbit at the point.
文中证明了如果广义对称系统在一点的邻域可控,那么系统在包含该点群作用轨道的一个开集上是可控的。
2
Not surprisingly, the system is symmetric and comprehensive.
系统是对称和全面的,这不足为奇。
3
Using the symmetric algorithms and the asymmetric algorithms together security performance of the application system is improved.