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Finite-difference approximation of the inverse Sturm–Liouville problem with frozen argument

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  • Bondarenko, Natalia P.

Abstract

This paper deals with the discrete system being the finite-difference approximation of the Sturm–Liouville problem with frozen argument. The inverse problem theory is developed for this discrete system. We describe the two principal cases: degenerate and non-degenerate. For these two cases, appropriate inverse problems statements are provided, uniqueness theorems are proved, and reconstruction algorithms are obtained. Moreover, the relationship between the eigenvalues of the continuous problem and its finite-difference approximation is investigated. We obtain the “correction terms” for approximation of the discrete problem eigenvalues by using the eigenvalues of the continuous problem. Relying on these results, we develop a numerical algorithm for recovering the potential of the Sturm–Liouville operator with frozen argument from a finite set of eigenvalues. The effectiveness of this algorithm is illustrated by numerical examples.

Suggested Citation

  • Bondarenko, Natalia P., 2022. "Finite-difference approximation of the inverse Sturm–Liouville problem with frozen argument," Applied Mathematics and Computation, Elsevier, vol. 413(C).
    • Handle: RePEc:eee:apmaco:v:413:y:2022:i:c:s0096300321007372
    DOI: 10.1016/j.amc.2021.126653
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    References listed on IDEAS

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    1. I. N. Parasidis & E. Providas, 2018. "Closed-Form Solutions for Some Classes of Loaded Difference Equations with Initial and Nonlocal Multipoint Conditions," Springer Optimization and Its Applications, in: Nicholas J. Daras & Themistocles M. Rassias (ed.), Modern Discrete Mathematics and Analysis, pages 363-387, Springer.
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    Cited by:

    1. Yi-Teng Hu & Murat Şat, 2023. "Trace Formulae for Second-Order Differential Pencils with a Frozen Argument," Mathematics, MDPI, vol. 11(18), pages 1-7, September.

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