发表机构
University of Oslo; University of Vienna(奥斯陆大学; 维也纳大学)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文证明幂零李群轨道中光滑相干框架和Riesz序列的严格必要密度条件,通过变形表示而非指标集获得稳定性结果,将齐次群结论推广至一般幂零李群。
AI 中文摘要
我们证明了连通、单连通幂零李群轨道中光滑相干框架和Riesz序列的严格必要密度条件。这将之前关于齐次群的结果推广到一般幂零李群。我们方法的主要新颖之处在于,我们证明了基于变形其表示而非其指标集的相干框架和Riesz序列的稳定性结果。
英文摘要
We prove strict necessary density conditions for smooth coherent frames and Riesz sequences in the orbit of a connected, simply connected, nilpotent Lie group. This extends previous results for homogeneous groups to general nilpotent Lie groups. The main novelty in our approach is that we prove a stability result for coherent frames and Riesz sequences based on deforming their representation rather than their index set.
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