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Three conditionally convergent series
Published 7 Sep 2018 in math.CA | (1809.02470v1)
Abstract: 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 $\infty$ or $-\infty$. An example is provided to show that the analogous statement for four series is false.
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