«THE BULLETIN OF IRKUTSK STATE UNIVERSITY». SERIES «MATHEMATICS»
«IZVESTIYA IRKUTSKOGO GOSUDARSTVENNOGO UNIVERSITETA». SERIYA «MATEMATIKA»
ISSN 1997-7670 (Print)
ISSN 2541-8785 (Online)

List of issues > Series «Mathematics». 2026. Vol 56

On the Solution of Coefficient-Inverse Problems for ODEs with Non-Local Conditions

Author(s)

Kamil R. Aida-zade 1,3, Vagif M. Abdullayev1,2,3

Institute of Mathematics, Baku, Azerbaijan

Azerbaijan State Oil and Industry University, Baku, Azerbaijan 

Azerbaijan University of Architecture and Construction, Baku, Azerbaijan 

Abstract
We consider a class of problems in which it is required to determine unknown constant coefficients appearing in the free terms of non-autonomous systems of ordinary differential equations. The basic and additional (overdetermining) conditions are, in the general case, of a nonlocal nature: they involve cumulative characteristics of the unknown state functions – both their values at selected points and their integral values over specified sub-intervals. Depending on the relation between the number of unknown coefficients and the number of additional conditions, several problem settings and corresponding solution methods are discussed. Results of computer experiments are presented, together with an analysis of how errors in the prescribed conditions affect the accuracy of the solutions for test problems.
About the Authors

Kamil R. Aida-zade, Dr. Sci. (Phys.-Math.), Corresponding Member of the National Academy of Sciences of Azerbaijan, Prof., Head of Department, Institute of Mathematics, Baku, AZ 1141, Azerbaijan, kamil aydazade@rambler.ru

Vagif M. Abdullayev, Dr. Sci. (Phys.-Math.), Prof., Azerbaijan State Oil and Industry University; Senior Research Scientist, Institute of Mathematics; Employee, Scientific and Innovation Center, Azerbaijan University of Architecture and Construction, Baku, AZ 1141, Azerbaijan, vaqif ab@rambler.ru

For citation
Aida-zade K. R., Abdullayev V. M. On the Solution of Coefficient-Inverse Problems for ODEs with Non-Local Conditions. The Bulletin of Irkutsk State University. Series Mathematics, 2026, vol. 56, pp. 47–63. (in Russian) https://doi.org/10.26516/1997-7670.2026.56.47
Keywords
inverse problems, parametric identification, multipoint conditions, nonlocal conditions, dynamic system
UDC
519.622
MSC
65L09, 34A55, 34B10
DOI
https://doi.org/10.26516/1997-7670.2026.56.47
References
  1. Abdullayev V.M. To the Solution of Loaded Differential Equations with Nonlocal Conditions. The Bulletin of Irkutsk State University. Series Mathematics, 2024, vol. 49, pp. 45–62. https://doi.org/10.26516/1997-7670.2024.49.45 (in Russian)
  2. Abramov A.A. A Variant of the Transfer Method. Zh. Vychisl. Mat. Mat. Fiz., 1961, vol. 1, no. 2, pp. 349–351. (in Russian)
  3. Aida-zade K.R., Abdullaev V.M. On the solution of boundary value problems with nonseparated multipoint and integral conditions. Diff. Equat., 2013, vol. 49, no. 9, pp. 1114–1125. https://doi.org/10.1134/S0012266113090061 (in Russian)
  4. Aida-zade K.R., Abdullayev V.M. To the Solution of Coefficient Inverse Problems with High-Order Overdetermination Conditions. Russ Math., 2025, vol. 69, no. 9, pp. 1–20. https://doi.org/10.3103/S1066369X25700367 (in Russian)
  5. Berezin I.S., Zhidkov N.P. Computing Methods. Vol. 2. Moscow, Nauka Publ., 1965, 620 p.
  6. Abdullayev V.M. On an inverse problem with high-order overdetermination conditions J. Inverse Ill-Posed Probl., 2025, vol. 33, no. 3, pp. 351–368. https://doi.org/10.1515/jiip-2024-0027
  7. Abdullayev V.M. Identification of the Functions of Response to Loading for Stationary Systems. Cybern. Syst. Anal., 2017, vol. 53, no. 3, pp. 417–425. https://doi.org/10.1007/s10559-017-9942-6
  8. Aida-zade K. R., Abdullayev V.M. Optimization of the Right-Hand Sides of Nonlocal Conditions of a Controllable System with Multipoint and Integral Objective Functional. Optimization, 2024, vol. 73, no. 1, pp. 205–228. https://doi.org/10.1080/02331934.2022.2098125
  9. Aida-zade K.R., Abdullayev V.M. To the solution of integro-differential equations with nonlocal conditions. Turkish Journal of Mathematics, 2022, vol. 46, no. 1, pp. 177–188. https://doi.org/10.3906/mat-2108-89
  10. Aida-Zade K.R, Abdullayev V.M. Numerical Method for Solving the Parametric Identification Problem for Loaded Differential Equations. Bull. Iran. Math. Soc., 2019, vol. 45, no. 6, pp. 1725–1742. https://doi.org/10.1007/s41980-019-00225-3
  11. Bakirova E.A., Assanova A.T., Kadirbayeva Z.M. A problem with parameter for the integro-differential equations. Mathematical Modelling and Analysis, 2021, vol. 26, no. 1, pp. 34–54. https://doi.org/10.3846/mma.2021.11977
  12. Denisov A.M. Introduction to the Theory of Inverse Problem, Moscow, Lomonosov Moscow State University Publ., 1994, 205 p.
  13. Ismailov M.I., Kanca F., Lesnic D. Determination of a time-dependent heat source under nonlocal boundary and integral overdetermination conditions. Appl. Math. Comput., 2011, vol. 218, no. 8, pp. 4138–4146. https://doi.org/10.1016/j.amc.2011.09.044
  14. Kabanikhin S.I. Inverse and Ill-Posed Problems: Theory and Applications. Berlin, De Gruyter, 2011, 477 p.
  15. Ling L., Yamamoto M., Hon Y.C., Takeuchi T. Identification of source locations in two-dimensional heat equations. Inverse Problems., 2006, vol. 22, no. 4, pp. 1289–1305. https://doi.org/10.1088/0266-5611/22/4/011
  16. Parasidis I.N., Providas E. An exact solution method for a class of nonlinear loaded difference equations with multipoint boundary conditions. J. Difference Equ. Appl., 2018, vol. 24, pp. 1649–1663. DOI:10.1080/10236198.2018.1515928
  17. Vabishchevich P.N., Vasil’ev V.I. Computational algorithms for solving the coefficient inverse problem for parabolic equations. Inverse Probl. Sci. Eng., 2016, vol. 24, no. 1, pp. 42–59. https://doi.org/10.1080/17415977.2014.993984
  18. Yang F., Guo H.Z., Li X.X. The method of central difference for the inverse time-dependent heat source problem. Appl. Math. Comput., 2011, vol. 218, no. 7, pp. 3025–3034. https://doi.org/10.1016/j.amc.2011.09.016

Full text (russian)