Properties of the Integer-Order Generalized Bessel Integral Operator

Authors

DOI:

https://doi.org/10.56143/ujmcs.v2i3s.4

Keywords:

higher-order ordinary differential equation; generalized Bessel differential operator; generalized Erdélyi–Kober operator; integer-order generalized Bessel integral operator.

Abstract

This article examines the properties of solutions obtained for the Cauchy problem associated with ordinary differential equations that contain a higher-order singular Bessel differential operator together with a lower-order term. As part of the research, an integral expression for the unique solution to the Cauchy problem is derived, one that incorporates both the Gauss hypergeometric function and the second-kindHumbert hypergeometric function. It is rigorously proved that the obtained solution completely satisfies the prescribed initial conditions and is unique. Furthermore, based on this integral representation, an integer-order generalized Bessel integral operator is introduced. Several of its fundamental properties, including the existence of an inverse operator, integration-by-parts formulas, and the semigroup property of the operator, are established through a series of lemmas. 

Author Biographies

  • professor Karimov Sh.T., Fergana State University

    Fergana State University. Fergana, Uzbekistan

  • Boynazarov A.N., Fergana State University

    Fergana State University. Fergana, Uzbekistan

References

[1] Sitnik, S., Karimov, Sh., & Boynazarov, A. (2025). Solving the Cauchy problem for an ordinary differential equation with an integer power of the Bessel operator using transmutation operators. Journal of Mathematical Analysis and Applications. Received: 30 July 2025; Accepted: 7 October 2025. https://doi.org/10.1007/s10958-025-xxxx-x

[2] Samko, S. G., Kilbas, A. A., & Marichev, O. I. (1987). Fractional integrals and derivatives: Theory and applications. Minsk: Nauka i Tekhnika. 688 p.

[3] Urinov, A. K., Sitnik, S. M., Shishkina, E. L., & Karimov, Sh. T. (2022). Fractional integrals and derivatives (Generalizations and applications). [In Russian]. Fergana: Publishing House “Farg’ona”. 192 p.

[4] Urinov, A. K., & Karimov, Sh. T. (2021). Erdélyi–Kober operators and applications to partial differential equations. Fergana: Publishing House “Farg’ona”. 202 p.

[5] Sprinkhuizen-Kuyper, I. G. (1979). A fractional integral operator corresponding to negative powers of a certain second-order differential operator. Journal of Mathematical Analysis and Applications, 72(2), 674–702. https://doi.org/10.1016/0022-247X(79)90278-9

[6] Lowndes, J. S. (1970). A generalization of the Erdélyi–Kober operators. Proceedings of the Edinburgh Mathematical Society, 17(2), 139–148. https://doi.org/10.1017/S001309150000856X

[7] Kiryakova, V. (1986). Applications of the generalized Poisson transformation for solving hyper-Bessel differential equations. Godishnik VUZ. Applied Mathematics, 22(4), 129–140.

[8] Kiryakova, V. (1994). Generalized fractional calculus and applications. Harlow: Longman Scientific & Technical. 360 p.

[9] Kiryakova, V. (2008). Transmutation method for solving hyper-Bessel differential equations based on the Poisson–Dimovski transformation. Fractional Calculus and Applied Analysis, 11(3), 299–316.

[10] Kiryakova, V. S. (1994). Generalized fractional calculus and applications. New York: John Wiley & Sons. 360 p.

[11] Urinov, A. K. (2012). Special functions and special operators. [In Uzbek]. Fergana: “Farg’ona” nashriyoti. 112 p.

[12] Lebedev, N. N. (1972). Special functions and their applications. New York: Dover Publications. 358 p.

[13] Sitnik, S. M., & Skoromnik, O. V. (2020). Transmutation operators that generalize the Sonine and Poisson transforms. Journal of Mathematical Sciences, 249(4), 543–558. https://doi.org/10.1007/s10958-020-04987-2

[14] Luchko, Y., & Gorenflo, R. (1998). Fractional derivatives of Erdélyi–Kober type and some of their applications. Fractional Calculus and Applied Analysis, 1(1), 63–78.

[15] Kiryakova, V. (2021). The interplay of generalized fractional calculus and integral transforms. Mathematics, 9(15), 1789. https://doi.org/10.3390/math9151789

[16] Karimov, Sh. T. (2024). On a method for solving the Cauchy problem for a high-order equation with a Bessel operator. Izvestiya Vysshikh Uchebnykh Zavedeniy. Matematika.

[17] Hasanov, A. S., & Ergashev, T. G. (2023). New properties of the Humbert functions and their applications. Integral Transforms and Special Functions, 34(5), 412–428. https://doi.org/10.1080/10652469.2022.2156789

[18] Shishkina, E., & Sitnik, S. M. (2017). On fractional powers of the Bessel operator on a semiaxis. arXiv preprint arXiv:1706.01928. https://doi.org/10.48550/arXiv.1706.01928

[19] Sneddon, I. N. (1972). The use of integral transforms. New York: McGraw-Hill. 540 p.

[20] Bateman, H., & Erdélyi, A. (1954). Tables of integral transforms (Vol. 1). New York: McGraw-Hill. 391 p.

[21] Erdélyi, A., Magnus, W., Oberhettinger, F., & Tricomi, F. G. (1953). Higher transcendental functions (Vol. I). New York: McGraw-Hill. 302 p.

[22] Comtet, L. (1974). Advanced Combinatorics: The Art of Finite and Infinite Expansions. D. Reidel Publishing Company, Dordrecht.

[23] Sh. T. Karimov, “The Cauchy Problem for the Iterated Klein–Gordon Equation with the Bessel Operator,” Lobachevskii Journal of Mathematics, vol. 41, no. 5, pp. 772–784, 2020.

[24] Sh. T. Karimov and Sh. A. Oripov, “On a Method for Constructing the Riemann Function for Partial Differential Equations with a Singular Bessel Operator,” Lobachevskii Journal of Mathematics, vol. 41, no. 6, pp. 1087–1093, 2020.

[25] Sh. T. Karimov and E. L. Shishkina, “Some methods of solution to the Cauchy problem for an inhomogeneous equation of hyperbolic type with a Bessel operator,” Journal of Physics: Conference Series, vol. 1203, no. 1, art. no. 012096, 2019.

[26] Sh. T. Karimov, “On One Method for the Solution of an Analog of the Cauchy Problem for a Polycaloric Equation with Singular Bessel Operator,” Ukrainian Mathematical Journal, vol. 69, no. 10, pp. 1593–1606, 2018.

[27] M. S. Salokhiddinov and G. N. Nasriddinov, Oddiy differensial tenglamalar [Ordinary Differential Equations], Tashkent: Ozbekiston, 1994 (in Uzbek).

[28] Dunaev A.S., Shlychkov V.I. Gipergeometricheskie Funktsii (Hypergeometric Functions).Educational Electronic Text Resource. Yekaterinburg, 2017.

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Published

2026-08-30

How to Cite

Properties of the Integer-Order Generalized Bessel Integral Operator. (2026). Uzbekistan Journal of Mathematics and Computer Science , 2(1), 32-48. https://doi.org/10.56143/ujmcs.v2i3s.4

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