Bessel sequences of exponentials on fractal measures

Details Bessel sequences of exponentials on fractal measures Bessel sequences of exponentials on fractal measures

2010-08-25

arxiv.org/abs/1008.4304v1

Mathematics

Functional Analysis

Scientific paper

Jorgensen and Pedersen have proven that a certain fractal measure $\nu$ has no infinite set of complex exponentials which form an orthonormal set in $L^2(\nu)$. We prove that any fractal measure $\mu$ obtained from an affine iterated function system possesses a sequence of complex exponentials which forms a Riesz basic sequence, or more generally a Bessel sequence, in $L^2(\mu)$ such that the frequencies have positive Beurling dimension.

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