Izvestiya of Saratov University.

Mathematics. Mechanics. Informatics

ISSN 1816-9791 (Print)
ISSN 2541-9005 (Online)


For citation:

Yurko V. A. Global solvability of the inverse spectral problem for differential systems on a finite interval. Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, 2024, vol. 24, iss. 2, pp. 200-208. DOI: 10.18500/1816-9791-2024-24-2-200-208, EDN: ZORJSE

This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY 4.0).
Published online: 
31.05.2024
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English
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Article type: 
Article
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539.374
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ZORJSE

Global solvability of the inverse spectral problem for differential systems on a finite interval

Autors: 
Yurko Vjacheslav Anatol'evich, Saratov State University
Abstract: 

The inverse spectral problem is studied for non-selfadjoint systems of ordinary differential equations on a finite interval. We provide necessary and sufficient conditions for the global solvability of the inverse problem, along with an algorithm for constructing its solution. For solving this nonlinear inverse problem, we develop ideas of the method of spectral mappings, which allows one to construct the potential matrix from the given spectral characteristics and establish conditions for the global solvability of the inverse problem considered.

References: 
  1. Levitan B. M., Sargsjan I. S. Sturm – Liouville and Dirac Operators. Mathematics and Aplications, vol. 59. Dordrecht, Kluwer Academic Publishers, 1991. 350 p. (Russ. ed.: Moscow, Nauka, 1988). https://doi.org/10.1007/978-94-011-3748-5
  2. Freiling G., Yurko V. A. Inverse Sturm – Liouville Problems and Their Applications. New York, NOVA Science Publishers, 2001. 305 p.
  3. Shabat A. B. An inverse scattering problem. Differential Equations, 1979, vol. 15, iss. 10, pp. 1299–1307.
  4. Malamud M. M. Questions of uniqueness in inverse problems for systems of differential equations on a finite interval. Transactions of the Moscow Mathematical Society, 1999, vol. 60, pp. 173–224.
  5. Sakhnovich L. A. Spectral Theory of Canonical Differential Systems. Method of Operator Identities. Operator Theory: Advances and Applications, vol. 107. Basel, Birkhauser Verlag, 1999. 202 p. https://doi.org/10.1007/978-3-0348-8713-7
  6. Yurko V. A. Method of Spectral Mappings in the Inverse Problem Theory. Inverse and Ill-Posed Problems Series, vol. 31. Utrecht, VSP, 2002. 303 p. https://doi.org/10.1515/9783110940961
  7. Yurko V. A. An inverse spectral problem for singular non-selfadjoint differential systems. Sbornik: Mathematics, 2004, vol. 195, iss. 12, pp. 1823–1854. https://doi.org/10.1070/SM2004v195n12ABEH000869
  8. Yurko V. A. Inverse spectral problems for differential systems on a finite interval. Results in Mathematics, 2005, vol. 48, pp. 371–386. https://doi.org/10.1007/BF03323374
  9. Yurko V. A. Recovery of nonselfadjoint differential operators on the half-line from the Weyl matrix. Mathematics of the USSR-Sbornik, 1992, vol. 72, iss. 2, pp. 413–438. https://doi.org/10.1070/SM1992v072n02ABEH002146
  10. Yurko V. A. Inverse Spectral Problems for Differential Operators and their Applications. Amsterdam, Gordon and Breach, 2000. 272 p. https://doi.org/10.1201/9781482287431
Received: 
29.11.2022
Accepted: 
24.05.2023
Published: 
31.05.2024