Three conditionally convergent series, but not four

Three conditionally convergent series, but not four
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三个条件收敛级数,但不是四个

DOI:
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发表时间:
2018
影响因子:
0.9
通讯作者:
W. Brian
W. Brian
中科院分区:
数学3区
文献类型:
--
作者:
W. Brian

文献摘要

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证明了给定任何三个条件收敛的实数序列,存在一个自然数序列,使得相应的三个子序列中的每一个总和为 ∞ 或 -∞ 。提供一个例子来表明四个系列的类似陈述是错误的。
It is proved that given any three conditionally convergent series of real numbers, there is a single sequence of natural numbers such that each of the corresponding three subseries sums to either ∞ or −∞ . An example is provided to show that the analogous statement for four series is false.