Last Updated :2025/11/26

upper limit

実数列の上極限を求めるには、先頭の項を順に取り除いて尾部分列を作り、それぞれの尾部分列の上限(supremum)を求め、最後にそれらの上限の下限を取ればよい。

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(mathematical analysis) The upper limit of a sequence of real numbers is the real number which can be found as follows: remove the first term of the sequence in order to obtain the first subsequence. Then remove the first term of the first subsequence in order to obtain the second subsequence. Repeat the removal of first terms in order to obtain a third subsequence, fourth subsequence, etc. Find the supremum of each of these subsequences, then find the infimum of all of these supremums. This infimum is the upper limit.

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upper limit

To determine the upper limit of a sequence of real numbers, remove successive initial terms to form tail subsequences, find the supremum of each tail, and then take the infimum of those supremums.

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To determine the upper limit of a sequence of real numbers, remove successive initial terms to form tail subsequences, find the supremum of each tail, and then take the infimum of those supremums.

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