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A Characterization of Cesàro Convergence
The American Mathematical Monthly ( IF 0.5 ) Pub Date : 2021-05-28 , DOI: 10.1080/00029890.2021.1898876
Paolo Leonetti 1
Affiliation  

Abstract

We show that a real bounded sequence (xn) is Cesàro convergent to l if and only if the sequence of averages with indices in [αk,αk+1) converges to l for all α>1. If, in addition, the sequence (xn) is nonnegative, then it is Cesàro convergent to 0 if and only if the same condition holds for some α>1.



中文翻译:

Cesàro收敛的特征

摘要

我们展示了一个真实的有界序列 (Xn) 塞萨罗收敛于 当且仅当带有索引的平均值序列 [α,α+1个) 收敛到 对所有人 α>1个. 此外,如果序列(Xn) 是非负的,则当且仅当某些条件相同时,它才是Cesàro收敛到0 α>1个.

更新日期:2021-05-28
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