给定数列{Xn},从中任意地选取无限项,按照原来的顺序组成的数列称为数列{Xn}的一个子列。 子列是数列,且与它的任一平凡子列同为收敛或发散,且在收敛时有相同的极限。
A family of meromorphic functions is called normal if every sequence in the family has a subsequence which converges(locally uniformly with respect to the spherical metric).
一个亚纯函数族称为正规的若它的任一序列都存在子列收敛(按球距内闭一致收敛)。
参考来源 - 亚纯函数唯一性理论与相关正规族问题的研究·2,447,543篇论文数据,部分数据来源于NoteExpress
可能会将子列中的值设置为默认值。
The values in the child column (or columns) can be set to default values.
对一个数列的奇子列和偶子列收敛且极限相等则原数列收敛的性质做了推广。
The property of the convergent sequence about even subsequence and odd subsequence is generalized.
可在整个列上计算聚合,或者由作为函数的第二个参数所给出的分组列指定的子组上计算聚合。
You can compute aggregations on the whole column, or on subgroups that are specified by the grouping column given as the second parameter of the function.
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