The connectedness of the non-empty closed subsets hyperspace with locally finite topology is discussed and a cardinal function called discrete degree is introduced.
讨论了赋予局部有限拓扑的非空闭子集超空间的连通性，还引入了一个对讨论局部有限超拓扑有用的基数函数，称为离散度。
For the finite set, the ordinal and cardinal Numbers are equivalent, but they differ in the infinite case.
有限集，有序和基数是等价，但他们在不同情况下的无限。
Firstly, this thesis discusses cardinal ranking method for the finite projects multiple objective group decision-making problem.
首先，本文讨论了在军事领域得到广泛应用的多目标群决策的基数秩评定方法。
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