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In this paper we obtain new characterizations of weakly unconditionally Cauchy series and unconditionally convergent series through Cesàro summability. We study new spaces associated to a series in a Banach space; as a consequence, new characterizations of complete and barrelled normed spaces are proved. 相似文献
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《Indagationes Mathematicae》2023,34(3):581-587
We provide a permutation-invariant version of Komlós’ type convergence for non-negative random variables. 相似文献
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