"Complementable and hierarchical Riesz bases of exponentials"Caragea, AndreiWe give partial answers to two questions concerning Riesz exponential bases. Firstly, we show that the standard Fourier basis is complementable with respect to any finite union of intervals. Secondly, we show that any finite union of intervals with endpoints independent over $\mathbb{Q}$ admits a so-called hierarchical Riesz exponential basis. |
http://univie.ac.at/projektservice-mathematik/e/talks/ICCHA2022_Caragea_2022-05_AC.pdf |
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