"Some results about the spectra of dual frames multipliers"Corso, RosarioWe discuss some results about two aspects of the spectra of dual frames multipliers, i.e. (discrete) multipliers where the involved frames are dual. In particular, on one hand we consider some classes of dual frames multipliers with at most countable spectra and analyze eigenvalues and limit points. On the other hand, we provide localizations of the spectra (i.e. we individuate regions of the complex plane containing the spectra) using some information about the frames and the symbols of the multipliers. |
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