有限基数(finite cardinal number)一类常见的基数.指有限集的基数.由于有限集S的基数S=}S}=n，故自然数。,1,2,w ,n,…都是有限基数.
有限集，有序和基数是等价，但他们在不同情况下的无限。
For the finite set, the ordinal and cardinal Numbers are equivalent, but they differ in the infinite case.
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。
The connectedness of the non-empty closed subsets hyperspace with locally finite topology is discussed and a cardinal function called discrete degree is introduced.
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