Exponential Riesz bases of subspaces and divided differences

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dc.creatorAvdonin, S. A.
dc.creatorIvanov, S. A.
dc.date2001-03-26
dc.date.accessioned2026-07-07T04:40:45Z
dc.date.available2026-07-07T04:40:45Z
dc.descriptionLinear combinations of exponentials $e^{iλ_kt}$ in the case where the distance between some points $λ_k$ tends to zero are studied. D. Ullrich has proved the basis property of the divided differences of exponentials in the case when the groups consist of equal number of points all of them are close enough to integers. We have generalized this result for groups with arbitrary number of close points and obtained a full description of Riesz bases of exponential divided differences. The application to a control problem is presented.
dc.descriptionLaTeX, 19 pages
dc.identifierhttps://arxiv.org/abs/math/0103160
dc.identifierhttp://arxiv.org/abs/math/0103160
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/61136
dc.subjectFunctional Analysis
dc.subject42C15
dc.titleExponential Riesz bases of subspaces and divided differences
dc.typetext

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