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Teoriya Veroyatnostei i ee Primeneniya, 1983, Volume 28, Issue 2, Pages 420–429
(Mi tvp2309)
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This article is cited in 2 scientific papers (total in 2 papers)
Short Communications
Convergence of Bernoulli series and the set of sums of a conditionally convergent functional series
S. A. Čobanjan Tbilisi
Abstract:
We survey a. s. convergence criteria for series $\sum a_k\varepsilon_k$ where $(\varepsilon_k)$ is a sequence of independent Bernoulli random variables, and $a1,a2,\dots$ are elements of a Banach space $X$. These criteria are applied to investigate the set $\mathfrak S_{(a_k)}$ of sums of a conditionally convergent series $\sum a_k$. The following problem is posed: does the a. s. convergence of $\sum a_k\varepsilon_k$ imply that $\mathfrak S_{(a_k)}$ is a shifted closed subspace of $X$. The answer is affirmative, if $X$ is of cotype $q$, $q<4$, and possesses the local unconditional structure.
Received: 09.12.1982
Citation:
S. A. Čobanjan, “Convergence of Bernoulli series and the set of sums of a conditionally convergent functional series”, Teor. Veroyatnost. i Primenen., 28:2 (1983), 420–429; Theory Probab. Appl., 28:2 (1984), 442–450
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https://www.mathnet.ru/eng/tvp2309 https://www.mathnet.ru/eng/tvp/v28/i2/p420
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Abstract page: | 302 | Full-text PDF : | 95 |
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