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arXiv · 2604.00765

Coherent frames with zero Beurling density

Ingrid Beltita·Jordy Timo van Velthoven
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Abstract

We show the existence of a coherent frame in the orbit of a connected, simply connected unimodular solvable Lie group of exponential growth for which the lower Beurling density of its index set is zero.

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Ingrid Beltita, Jordy Timo van Velthoven. 2026-04-01. Coherent frames with zero Beurling density. https://arxiv.org/abs/2604.00765

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