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Pure point measures with sparse support and sparse Fourier–Bohr support

dc.contributor.authorBaake, Michael
dc.contributor.authorStrungaru, Nicolae
dc.contributor.authorTerauds, Venta
dc.date.accessioned2021-01-15
dc.date.accessioned2022-05-31T01:43:06Z
dc.date.available2022-05-31T01:43:06Z
dc.date.issued2020
dc.description.abstractFourier‐transformable Radon measures are called doubly sparse when both the measure and its transform are pure point measures with sparse support. Their structure is reasonably well understood in Euclidean space, based on the use of tempered distributions. Here, we extend the theory to second countable, locally compact Abelian groups, where we can employ general cut and project schemes and the structure of weighted model combs, along with the theory of almost periodic measures. In particular, for measures with Meyer set support, we characterise sparseness of the Fourier–Bohr spectrum via conditions of crystallographic type, and derive representations of the measures in terms of trigonometric polynomials. More generally, we analyse positive definite, doubly sparse measures in a natural cut and project setting, which results in a Poisson summation type formula.
dc.format.extent416.12KB
dc.format.mimetypePDF
dc.identifier.citationBaake, M., Strungaru, N., & Terauds, V. (2020). Pure point measures with sparse support and sparse Fourier-Bohr support. Transactions of the London Mathematical Society, 7(1), 1–32. https://doi.org/10.1112/tlm3.12020
dc.identifier.doihttps://doi.org/10.1112/tlm3.12020
dc.identifier.urihttps://hdl.handle.net/20.500.14078/2137
dc.languageEnglish
dc.language.isoen
dc.rightsAttribution-NonCommercial-NoDerivs (CC BY-NC-ND)
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectAbelian groups
dc.subjectcompact groups
dc.subjectmeasure theory
dc.subjectRadon transforms
dc.subjectweights & measures
dc.subjectRadon
dc.titlePure point measures with sparse support and sparse Fourier–Bohr supporten
dc.typeArticle

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