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The classical moment problem and generalized indefinite strings

We show that the classical Hamburger moment problem can be included in the spectral theory of generalized indefinite strings. More precisely, we introduce the class of Krein–Langer strings and show that there is a bijective correspondence between moment sequences and this class of generalized indefi...

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Main Authors: Jonathan Eckhardt, Aleksey Kostenko
Format: Default Article
Published: 2018
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Online Access:https://hdl.handle.net/2134/24279829.v1
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author Jonathan Eckhardt
Aleksey Kostenko
author_facet Jonathan Eckhardt
Aleksey Kostenko
author_sort Jonathan Eckhardt (5731769)
collection Figshare
description We show that the classical Hamburger moment problem can be included in the spectral theory of generalized indefinite strings. More precisely, we introduce the class of Krein–Langer strings and show that there is a bijective correspondence between moment sequences and this class of generalized indefinite strings. This result can be viewed as a complement to the classical results of Krein on the connection between the Stieltjes moment problem and Krein–Stieltjes strings and Kac on the connection between the Hamburger moment problem and 2 × 2 canonical systems with Hamburger Hamiltonians.
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spelling rr-article-242798292018-04-10T00:00:00Z The classical moment problem and generalized indefinite strings Jonathan Eckhardt (5731769) Aleksey Kostenko (7161281) Applied mathematics Numerical and computational mathematics Pure mathematics Hamburger moment problem Generalized indefinite strings We show that the classical Hamburger moment problem can be included in the spectral theory of generalized indefinite strings. More precisely, we introduce the class of Krein–Langer strings and show that there is a bijective correspondence between moment sequences and this class of generalized indefinite strings. This result can be viewed as a complement to the classical results of Krein on the connection between the Stieltjes moment problem and Krein–Stieltjes strings and Kac on the connection between the Hamburger moment problem and 2 × 2 canonical systems with Hamburger Hamiltonians. 2018-04-10T00:00:00Z Text Journal contribution 2134/24279829.v1 https://figshare.com/articles/journal_contribution/The_classical_moment_problem_and_generalized_indefinite_strings/24279829 CC BY 4.0
spellingShingle Applied mathematics
Numerical and computational mathematics
Pure mathematics
Hamburger moment problem
Generalized indefinite strings
Jonathan Eckhardt
Aleksey Kostenko
The classical moment problem and generalized indefinite strings
title The classical moment problem and generalized indefinite strings
title_full The classical moment problem and generalized indefinite strings
title_fullStr The classical moment problem and generalized indefinite strings
title_full_unstemmed The classical moment problem and generalized indefinite strings
title_short The classical moment problem and generalized indefinite strings
title_sort classical moment problem and generalized indefinite strings
topic Applied mathematics
Numerical and computational mathematics
Pure mathematics
Hamburger moment problem
Generalized indefinite strings
url https://hdl.handle.net/2134/24279829.v1