上极限和下极限 Limit superior and limit inferior


数学上,串行的上极限和下极限可以看为串行的极限上下界。函数的上极限和下极限可以用类似方式考虑。(参见函数的极限)。集合的上极限和下极限分别是这个集合的极限点的上确界和下确界。
单词 | liminf |
释义 |
liminf
英汉-汉英词典
下极限
词组 | 习惯用语
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中文百科
上极限和下极限 Limit superior and limit inferior(重定向自Liminf)
![]() ![]() 数学上,串行的上极限和下极限可以看为串行的极限上下界。函数的上极限和下极限可以用类似方式考虑。(参见函数的极限)。集合的上极限和下极限分别是这个集合的极限点的上确界和下确界。
英语百科
Limit superior and limit inferior 上极限和下极限(重定向自Liminf)
![]() ![]() In mathematics, the limit inferior and limit superior of a sequence can be thought of as limiting (i.e., eventual and extreme) bounds on the sequence. They can be thought of in a similar fashion for a function (see limit of a function). For a set, they are the infimum and supremum of the set's limit points, respectively. In general, when there are multiple objects around which a sequence, function, or set accumulates, the inferior and superior limits extract the smallest and largest of them; the type of object and the measure of size is context-dependent, but the notion of extreme limits is invariant. Limit inferior is also called infimum limit, liminf, inferior limit, lower limit, or inner limit; limit superior is also known as supremum limit, limit supremum, limsup, superior limit, upper limit, or outer limit. |
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