Non-empty set

In this paper , the linear dependence of vectors in a vector space is generalized to an abstract dependence relation on an arbitrary non-empty set .

把向量空间中向量的线性相关性推广到抽象集合上的一种抽象相关关系。

We also prove that the system considered is exact null controllability at any time T > 0 when the input control acts on a non-empty open set , which is based on the finite time extinction and localization of the solution for the equation with a strong absorption term .

Ω，则基于具有强吸收项的方程的解在有限时间熄灭及局部化性质，可以研究系统在任意时间T>0的精确零能控性。