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arXiv 1605.03411math.FA
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LCA群中的格子镶嵌和框架

Lattice sub-tilings and frames in LCA groups

Davide Barbieri, Eugenio Hernandez, Azita Mayeli

摘要:

给定局部紧阿贝尔群$G$中的格$Λ$和具有有限正测度的可测子集$Ω$,则与对偶格相关联的特征标集形成$L^2(Ω)$的框架当且仅当$Ω$的不同平移$Λ$几乎有空交.这个结果的一些后果是著名的Fuglede定理格,以及一个简单的表征框架的调制。

英文摘要:

Given a lattice $Λ$ in a locally compact abelian group $G$ and a measurable subset $Ω$ with finite and positive measure, then the set of characters associated to the dual lattice form a frame for $L^2(Ω)$ if and only if the distinct translates by $Λ$ of $Ω$ have almost empty intersections. Some consequences of this results are the well-known Fuglede theorem for lattices, as well as a simple characterization for frames of modulates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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