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Counting function estimates for coherent frames and Riesz sequences (2407.13540v2)
Published 18 Jul 2024 in math.FA and math.CA
Abstract: We prove various estimates for the asymptotics of counting functions associated to point sets of coherent frames and Riesz sequences. The obtained results recover the necessary density conditions for coherent frames and Riesz sequences for general unimodular amenable groups, while providing more precise estimates under additional localization conditions on the coherent system for groups of polynomial growth.
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