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Ufimskii Matematicheskii Zhurnal, 2012, Volume 4, Issue 1, Pages 63–70
(Mi ufa133)
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This article is cited in 2 scientific papers (total in 2 papers)
On the distribution of indicators of unconditional exponential bases in spaces with a power weight
K. P. Isaev, K. V. Trunov Institute of Mathematics with Computing Centre, Ufa Science Centre, Russian Academy of Sciences, Ufa, Russia
Abstract:
In the present paper we consider the existence of unconditional exponential bases in a space of locally integrable functions on a bounded interval of the real number line $I$ satisfying
$$
\|f\|:=\sqrt{\int_I|f(t)|^2e^{-2h(t)}\,dt}<\infty,
$$
where $h(t)$ is a convex function on this interval. The lower estimate was obtained for the frequency of indicators of unconditional bases of exponentials when $I=(-1;1)$, $h(t)=-\alpha\ln(1-|t|)$, $\alpha>0$.
Keywords:
series of exponents, unconditional bases, Riesz bases, power weights, Hilbert space.
Received: 20.12.2011
Citation:
K. P. Isaev, K. V. Trunov, “On the distribution of indicators of unconditional exponential bases in spaces with a power weight”, Ufa Math. J., 4:1 (2012)
Linking options:
https://www.mathnet.ru/eng/ufa133 https://www.mathnet.ru/eng/ufa/v4/i1/p63
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