Duality invariance is the core of the space theory of functional analysis.
对偶不变性结果是泛函分析空间理论的核心内容。
2
An application example is enumerated that the space plane parameters are confirmed based on invariance of cross radio.
列举一个应用实例，利用交比的不变性确定空间平面参数。
3
Certain problems concerning state constraints and control constraints can often be reduced to the study of positive invariance of some subsets of the state space of dynamical systems.