phone +7 (3412) 91 60 92

Archive of Issues


Uzbekistan Kizgaldok, Tashkent district; Tashkent
Year
2024
Volume
34
Issue
2
Pages
167-181
>>
Section Mathematics
Title Direct and inverse problems for the Hilfer fractional differential equation
Author(-s) Ashurov R.R.ab, Fayziev Yu.E.cd, Tukhtaeva N.M.a
Affiliations Institute of Mathematics, National Academy of Sciences of Uzbekistana, Tashkent University of Applied Sciencesb, National University of Uzbekistanc, University of Exact and Social Sciencesd
Abstract The article studies direct and inverse problems for subdiffusion equations involving a Hilfer fractional derivative. An arbitrary positive self-adjoint operator $A$ is taken as the elliptic part of the equation. In particular, as the operator $A$ we can take the Laplace operator with the Dirichlet condition. First, the existence and uniqueness of a solution to the direct problem is proven. Then, using the representation of the solution to the direct problem, the existence and uniqueness of the inverse problem of finding the right-hand side of the equation, which depends only on the spatial variable, is proved.
Keywords Cauchy problems, Hilfer derivatives, subdiffusion equation, inverse problems
UDC 517.95
MSC 35R11, 34A12
DOI 10.35634/vm240201
Received 7 March 2024
Language Russian
Citation Ashurov R.R., Fayziev Yu.E., Tukhtaeva N.M. Direct and inverse problems for the Hilfer fractional differential equation, Vestnik Udmurtskogo Universiteta. Matematika. Mekhanika. Komp'yuternye Nauki, 2024, vol. 34, issue 2, pp. 167-181.
References
  1. Hilfer R. Applications of fractional calculus in physics, Singapore: World Scientific, 2000. https://doi.org/10.1142/3779
  2. Hilfer R. Threefold introduction to fractional derivatives, Anomalous Transport: Foundations and Applications, Weinheim: Wiley, 2007, pp. 17–73. https://doi.org/10.1002/9783527622979.ch2
  3. Gorenflo R., Kilbas A., Mainardi F., Rogosin S. Mittag–Leffler functions, related topics and applications, New York: Springer, 2014. https://doi.org/10.1007/978-3-662-43930-2
  4. Lizama C. Abstract linear fractional evolution equations, Handbook of fractional calculus with applications. Vol. 2. Fractional differential equations, Berlin–Boston: De Gruyter, 2019. P. 465–497. https://doi.org/10.1515/9783110571660-021
  5. Podlubny I. Fractional differential equations, San Diego: Academic Press, 1999.
  6. Pskhu A.V. Uravneniya v chastnykh proizvodnykh drobnogo poryadka (Fractional partial differential equations), Moscow: Nauka, 2005.
  7. Dzhrbashyan M.M. Integral'nye preobrazovaniya i predstavlenie funktsii v kompleksnoi oblasti (Integral transforms and representation of functions in the complex domain), Moscow: Nauka, 1966. https://zbmath.org/0154.37702
  8. Kilbas A.A., Srivastava H.M., Trujillo J.J. Theory and applications of fractional differential equations, Amsterdam: Elsevier, 2006.
  9. Hilfer R., Luchko Yu., Tomovski Ž. Operational method for the solution of fractional differential equations with generalized Riemann–Liouville fractional derivatives, Fractional Calculus and Applied Analysis, 2009, vol. 12, no. 3, pp. 299–318. https://www.researchgate.net/publication/228746820
  10. Tomovski Ž., Hilfer R., Srivastava H.M. Fractional and operational calculus with generalized fractional derivative operators and Mittag–Leffler type functions, Integral Transforms and Special Functions, 2010, vol. 21, issue 11, pp. 797–814. https://doi.org/10.1080/10652461003675737
  11. Kabanikhin S.I. Inverse and ill-posed problems: Theory and applications, Berlin–Boston: De Gruyter, 2011. https://doi.org/10.1515/9783110224016
  12. Liu Yikan, Li Zhiyuan, Yamamoto Masahiro. Inverse problems of determining sources of the fractional partial differential equations, Handbook of fractional calculus with applications. Vol. 2. Fractional differential equations, Berlin–Boston: De Gruyter, 2019, pp. 411–430. https://doi.org/10.1515/9783110571660-018
  13. Karimov E.T., Turdiev Kh.N. Direct and inverse source problems for sub-diffusion equation involving generalized Hilfer derivative with a non-classical boundary condition, Bulletin of the Institute of Mathematics, 2022, vol. 5, no. 5, pp. 53–59.
  14. Karimov E.T., Toshtemirov B.H. Non-local boundary value problem for a mixed-type equation involving the bi-ordinal Hilfer fractional differential operators, Uzbek Mathematical Journal, 2021, vol. 65, issue 2, pp. 61–77. https://doi.org/10.29229/uzmj.2021-2-5
  15. Furati Kh.M., Iyiola O.S., Kirane M. An inverse problem for a generalized fractional diffusion, Applied Mathematics and Computation, 2014, vol. 249, pp. 24–31. https://doi.org/10.1016/j.amc.2014.10.046
  16. Malik S.A., Aziz S. An inverse source problem for a two parameter anomalous diffusion equation with nonlocal boundary conditions, Computers and Mathematics with Applications, 2017, vol. 73, issue 12, pp. 2548–2560. https://doi.org/10.1016/j.camwa.2017.03.019
  17. Ashurov R.R., Mukhiddinova A.T. Inverse problem of determining the heat source density for the subdiffusion equation, Differential Equations, 2020, vol. 56, issue 12, pp. 1550–1563. https://doi.org/10.1134/S00122661200120046
  18. Orlovsky D.G. Determination of the parameter of the differential equation of fractional order with the Caputo derivative in Hilbert space, Journal of Physics: Conference Series, 2019, vol. 1205, 012042. https://doi.org/10.1088/1742-6596/1205/1/012042
  19. Ruzhansky M., Tokmagambetov N., Torebek B.T. Inverse source problems for positive operators. I: Hypoelliptic diffusion and subdiffusion equations, Journal of Inverse and Ill-posed Problems, 2019, vol. 27, issue 6, pp. 891–911. https://doi.org/10.1515/jiip-2019-0031
  20. Fedorov V.E., Kostić M. Identification problem for strongly degenerate evolution equations with the Gerasimov–Caputo derivative, Differential Equations, 2020, vol. 56, issue 12, pp. 1613–1627. https://doi.org/10.1134/S00122661200120101
  21. Orlovsky D., Piskarev S. Inverse problem with final overdetermination for time-fractional differential equation in a Banach space, Journal of Inverse and Ill-posed Problems, 2020, vol. 30, issue 2, pp. 221–237. https://doi.org/10.1515/jiip-2020-0094
  22. Fedorov V.E., Nazhimov R.R. Inverse problems for a class of degenerate evolution equations with Riemann–Liouville derivative, Fractional Calculus and Applied Analysis, 2019, vol. 22, issue 2, pp. 271–286. https://doi.org/10.1515/fca-2019-0018
  23. Fedorov V.E., Nagumanova A.V., Avilovich A.S. A class of inverse problems for evolution equations with the Riemann–Liouville derivative in the sectorial case, Mathematical Methods in the Applied Sciences, 2021, vol. 44, issue 15, pp. 11961–11969. https://doi.org/10.1002/mma.6794
  24. Fedorov V.E., Ivanova N.D., Borel L.V., Avilovich A.S. Nonlinear inverse problems for fractional differential equations with sectorial operators, Lobachevskii Journal of Mathematics, 2022, vol. 43, issue 11, pp. 3125–3141. https://doi.org/10.1134/S1995080222140116
  25. Ashurov R.R., Fayziev Yu.E. Determination of fractional order and source term in a fractional subdiffusion equation, Eurasian Mathematical Journal, 2022, vol. 13, no. 1, pp. 19–31. https://doi.org/10.32523/2077-9879-2022-13-1-19-31
Full text
Next article >>