Coherent frames with zero Beurling density
Functional Analysis
2026-04-02 v1 Representation Theory
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.
Cite
@article{arxiv.2604.00765,
title = {Coherent frames with zero Beurling density},
author = {Ingrid Beltita and Jordy Timo van Velthoven},
journal= {arXiv preprint arXiv:2604.00765},
year = {2026}
}