Far East Journal of Mathematical Sciences (FJMS)

The Far East Journal of Mathematical Sciences (FJMS) publishes original research papers and survey articles in pure and applied mathematics, statistics, mathematical physics, and other related fields. It welcomes application-oriented work as well.

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REGULARIZATION OF A MULTIDIMENSIONAL INVERSE PROBLEM WITH THE D’ALEMBERT OPERATOR, DEGENERATING INTO A SYSTEMOF VOLTERRA EQUATIONS

Authors

  • T. D. Omurov
  • K. R. Dzhumagulov

Keywords:

D’Alembert operator, multidimensional inverse problem, integral equation, unbounded domain, Picard method, Banach principle, regularization method

DOI:

https://doi.org/10.17654/0972087125031

Abstract

In the field of wave theory, in problems of hereditary environment, etc., various classes of inverse problems are encountered, and in the study the most important role is played by the questions of uniqueness of the solution and regularizability of the original problems in certain spaces.

In this regard, we study a multidimensional inverse problem with the D’Alembert operator in an unbounded domain where the system of Volterra integral equations of the first and third kind degenerates. Further, in order to prove the regularizability of the original problem in the Banach vector space, we apply a variant of the system regularization method.

Received: May 15, 2025
Accepted: July 15, 2025

References

[1] A. S. Apartsin, Nonclassical Volterra Equations of the First Kind: Theory and Numerical Methods, Nauka, Novosibirsk, 1999, 199 (in Russian).

[2] Yu. E. Anikonov, Some Methods for the Study of Multidimensional Inverse Problems for Differential Equations, Nauka, Novosibirsk, 1978, 118 (in Russian).

[3] A. L. Bukhgeim, Volterra Equations and Inverse Problems, Nauka, Novosibirsk, 1983, 207 (in Russian).

[4] S. I. Kabanikhin, Inverse and Ill-posed Problems, Siberian Scientific Publishing, Novosibirsk, 2009, 457 (in Russian).

[5] M. M. Lavrentiev, V. G. Vasiliev and V. G. Romanov, Multidimensional Inverse Problems for Differential Equations, Nauka, Siberian Branch, Novosibirsk, 1969, 67 (in Russian).

[6] M. M. Lavrentiev, Regularization of Volterra-type Operator Equations, Problems of Mathematical Physics and Computational Mathematics, Nauka, Moscow, 1977, 199-205 (in Russian).

[7] N. A. Magnitsky, Linear Volterra Integral Equations of the First and Third Kind, Zh. Vychisl. Mat. i Mat. Fiz. 19 (1979), 970-989 (in Russian).

[8] T. D. Omurov and T. T. Karakeev, Regularization and numerical methods for solving inverse and nonlocal boundary problems, Ilim, Bishkek (2006), 164 (in Russian).

[9] T. D. Omurov, A. O. Ryspayev and M. T. Omurov, Inverse problems in applications of mathematical physics, Bishkek (2014), 192 (in Russian).

[10] T. Tobias, On the inverse problem of determining the kernel of a hereditary medium, Proc. Acad. Sci. Estonian SSR Phys.-Math. 2 (1984), 182-187 (in Russian).

Published

2025-08-21

Issue

Section

Articles

How to Cite

REGULARIZATION OF A MULTIDIMENSIONAL INVERSE PROBLEM WITH THE D’ALEMBERT OPERATOR, DEGENERATING INTO A SYSTEMOF VOLTERRA EQUATIONS. (2025). Far East Journal of Mathematical Sciences (FJMS), 142(4), 559-570. https://doi.org/10.17654/0972087125031

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