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Inverse Coefficient Problem for Fractional Wave Equation with the Generalized Riemann–Liouville Time Derivative

Author

Listed:
  • Durdimurod Durdiev

    (Uzbekistan Academy of Sciences
    Bukhara State University)

  • Halim Turdiev

    (Uzbekistan Academy of Sciences
    Bukhara State University)

Abstract

This paper considers the inverse problem of determining the time-dependent coefficient in the fractional wave equation with Hilfer derivative. In this case, the direct problem is initial-boundary value problem for this equation with Cauchy type initial and nonlocal boundary conditions. As overdetermination condition nonlocal integral condition with respect to direct problem solution is given. By the Fourier method, this problem is reduced to equivalent integral equations. Then, using the Mittag-Leffler function and the generalized singular Gronwall inequality, we get apriori estimate for solution via unknown coefficient which we will need to study of the inverse problem. The inverse problem is reduced to the equivalent integral of equation of Volterra type. The principle of contracted mapping is used to solve this equation. Local existence and global uniqueness results are proved. The stability estimate is also obtained.

Suggested Citation

  • Durdimurod Durdiev & Halim Turdiev, 2025. "Inverse Coefficient Problem for Fractional Wave Equation with the Generalized Riemann–Liouville Time Derivative," Indian Journal of Pure and Applied Mathematics, Springer, vol. 56(2), pages 751-767, June.
    • Handle: RePEc:spr:indpam:v:56:y:2025:i:2:d:10.1007_s13226-023-00517-9
    DOI: 10.1007/s13226-023-00517-9
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