FUNDAMENTALNAYA
I PRIKLADNAYA MATEMATIKA
(FUNDAMENTAL AND APPLIED MATHEMATICS)
2000, VOLUME 6, NUMBER 1, PAGES 81-92
S. V. Golovan
Abstract
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In this paper we consider \emph{wavelet type} systems,
i. e.\ systems of type
$$
\{ \psi_{mn}(x) = 2^{m/2} \psi(2^mx-n) \},
$$
where $\psi \in L^2 (\mathbb R)$
such that
$\supp \psi \Subset \mathbb R$ .
Let $E$ be a set of real numbers.
We prove the equivalence of absolute and unconditional
convergence almost everywhere on $E$ of the series
$$
\sum_{\substack{m \geq 0\\ n \in \mathbb Z}} a_{mn} \psi_{mn}(x).
$$
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Last modified: April 11, 2000