| Citation: | Ahmed M. A. El-Sayed, Shaymaa I. Nasim, Eman M. A. Hamdallah. ON THE QUALITATIVE PROPERTIES OF THE SOLUTION OF A NON-LINEAR LANGEVIN EQUATION OF TWO FRACTAL DERIVATIVES[J]. Journal of Applied Analysis & Computation, 2026, 16(3): 1475-1489. doi: 10.11948/20250229 |
In this paper, we study the qualitative properties of the solution of a non-linear fractal Langevin equation involving two distinct fractal orders. We prove the existence and uniqueness of solutions in the space C[0, T]. Additionally, we examine the continuous dependence of the solution on the parameters of the problem. Also, the Hyers–Ulam stability of the proposed problem will be studied. Moreover, the continuation of the problem will be proved. Finally, an example is provided to illustrate the applicability of the assumed conditions and to demonstrate the obtained results.
| [1] | B. Ahmad, J. J. Nieto, A. Alsaedi and M. El-Shahed, A study of nonlinear Langevin equation involving two fractional orders in different intervals, Nonlinear Analysis: Real World Applications, 2012, 13(2), 599–606. doi: 10.1016/j.nonrwa.2011.07.052 |
| [2] | A. El Allaoui, L. Mbarki, Y. Allaoui and J. V. Sousa, Solvability of langevin fractional differential equation of higher-order with integral boundary conditions, Journal of Applied Analysis and Computation, 2025, 15(1), 316–332. doi: 10.11948/20240092 |
| [3] | L. Almaghamsi, Stability analysis of hybrid Langevin equation via two fractional operators, Fractals, 2025, 33(6), 1–13. |
| [4] | R. F. Curtain and A. J. Pritchard, Functional Analysis in Modern Applied Mathematics, Academic Press: Cambridge, MA, USA, 1977. |
| [5] | S. Dhaniya, A. Kumar, A. Khan and T. Abdeljawad, Stability analysis of a class of Langevin equations in the frame of generalized Caputo fractional operator with nonlocal boundary conditions, Boundary Value Problems, 2025, 2025(1), 69. doi: 10.1186/s13661-025-02024-8 |
| [6] | N. Dunford and J. T. Schwartz, Linear Operators, Part 1: General Theory, John Wiley & Sons, 1988. |
| [7] | H. Fazli, H. Sun and J. J. Nieto, Fractional Langevin equation involving two fractional orders: Existence and uniqueness revisited, Mathematics, 2020, 8(5), 743. doi: 10.3390/math8050743 |
| [8] | K. Goebel and W. A. Kirk, Topics in Metric Fixed Point Theory, Cambridge University Press, Cambridge, 1990. |
| [9] | A. Granas and J. Dugundji, Fixed Point Theory, Springer Monographs in Mathematics, Springer, New York, 2003. |
| [10] | S. Ijadi, S. M. Vaezpour, M. Shabibi and S. Rezapour, On the singular-hybrid type of the Langevin fractional differential equation with a numerical approach, Boundary Value Problems, 2024, 2024(1), 132. doi: 10.1186/s13661-024-01922-7 |
| [11] | S. M. Jung, Hyers-Ulam-Rassias Stability of Functional Equations in Nonlinear Analysis, Vol. 48, Springer Science & Business Media, 2011. |
| [12] | A. N. Kolmogorov and S. V. Fomin, Itroductory Real Analysis, Dovor Publ. Inc., New York, 1975. |
| [13] | S. I. Nasim, A. M. A. El-Sayed and E. M. A. Hamdallah, Fractal-fractional differential and integral operators: Definitions, some properties and applications, Journal of Fractional Calculus and Applications, 2025, 16(2), 1–11. |
| [14] | S. I. Nasim, A. M. El-Sayed and E. M. Hamdallah, Integrable and continuous solutions of the nonlinear delayed Abel fractal integral equation of the second kind, International Journal of Analysis and Applications, 2025, 23, 285. doi: 10.28924/2291-8639-23-2025-285 |
| [15] | S. I. Nasim, A. M. A. El-Sayed and W. G. El-Sayed, Solvability of an initial-value problem of non-linear implicit fractal differential equation, Alexandria Journal of Science and Technology, 2024, 1(2), 76–79. |
| [16] | A. Parvate and A. D. Gangal, Fractal differential equations and fractal-time dynamical systems, Pramana, 2005, 64(3), 389–409. doi: 10.1007/BF02704566 |
| [17] | H. O. Peitgen, H. Jurgens and D. Saupe, Chaos and Fractals, Springer New York, 2004. |
| [18] | A. Salem, Existence results of solutions for anti-periodic fractional Langevin equation, Journal of Applied Analysis and Computation, 2020, 10(6), 2557–2574. doi: 10.11948/20190419 |
| [19] | A. Salem, F. Alzahrani and B. Alghamdi, Langevin equation involving two fractional orders with three-point boundary conditions, Diff. and Integral Equ., 2020, 33(3–4), 163–180. |
| [20] | A. M. A. El-Sayed, M. M. S. Ba-Ali and E. M. A. Hamdallah, An investigation of a nonlinear delay functional equation with a quadratic functional integral constraint, Mathematics, 2023, 11(21), 4475. doi: 10.3390/math11214475 |
| [21] | A. M. A. El-Sayed, W. G. El-Sayed and S. I. Nasim, On the solvability of a delay tempered-fractal differential equation, Journal of Fractional Calculus and Applications, 2024, 15(1), 1–14. |
| [22] | A. M. A. El-Sayed, W. G. El-Sayed and S. I. Nasim, Fractal and tempered-fractal Gronwall's inequalities type, Adv. Inequal. Appl., 2024, 2024. |
| [23] | A. M. A. El-Sayed, H. Zahed, S. I. Nasim and E. M. A. Hamdallah, Multi-term nonlinear fractal-orders delayed Abel integral equation: Existence of solutions, stability, and applications, Contemporary Mathematics, 2025, 6(6), 8594–8621. |
| [24] | A. Yadav, T. Mathur, S. Agarwal and B. Yadav, Existence and stability results for fractional Langevin equation in complex domain, Filomat, 2024, 38(25), 8805–8812. doi: 10.2298/FIL2425805Y |