AccScience Publishing / IJOCTA / Volume 11 / Issue 3 / DOI: 10.11121/ijocta.2021.1198
RESEARCH ARTICLE

Some qualitative properties of nonlinear fractional integro-differential equations of variable order

Ahmed Refice1 Mohammed Said Souid2 Ali Yakar3*
IJOCTA 2021, 11(3), 68–78; https://doi.org/10.11121/ijocta.2021.1198
Submitted: 25 November 2021 | Accepted: 30 December 2021 | Published: 31 December 2021
© 2021 by the Author(s). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution -Noncommercial 4.0 International License (CC-by the license) ( https://creativecommons.org/licenses/by-nc/4.0/ )
Abstract

The existence-uniqueness criteria of nonlinear fractional integro-differential equations of variable order with multiterm boundary value conditions are considered in this work. By utilizing the concepts of generalized intervals combined with the piecewise constant functions, we transform our problem into usual Caputo’s fractional differential equations of constant order. We develop the necessary criteria for assuring the solution’s existence and uniqueness by applying Schauder and Banach fixed point theorem. We also examine the stability of the derived solution in the Ulam-Hyers-Rassias (UHR) sense and provide an example to demonstrate the credibility of the results.

Keywords
Fractional differential equations
of variable order
Boundary value problem
Fixed point theorem
Ulam-Hyers-Rassias stability
Conflict of interest
The authors declare they have no competing interests.
References

[1] Baleanu, D., Machado, J. A. T., & Luo, A. C. (Eds.). (2011). Fractional Dynamics and Control. Springer Science & Business Media.

[2] Singh, H., Kumar, D., & Baleanu, D. (Eds.). (2019). Methods of Mathematical Modelling: Fractional Differential Equations. CRC Press.

[3] Samko, S. G., & Ross, B. (1993). Integration and differentiation to a variable fractional order. Integral Transforms and Special Functions, 1(4), 277-300.

[4] G´omez-Aguilar, J. F. (2018). Analytical and numerical solutions of a nonlinear alcoholism model via variable-order fractional differential equations. Physica A: Statistical Mechanics and its Applications, 494, 52-75.

[5] Sun, H., Chang, A., Zhang, Y., & Chen, W. (2019). A review on variable-order fractional differential equations: mathematical foundations, physical models, numerical methods and applications. Fractional Calculus and Applied Analysis, 22(1), 27-59.

[6] Sun, H. G., Chen, W., Wei, H., & Chen, Y. Q. (2011). A comparative study of constantorder and variable-order fractional models in characterizing memory property of systems. The European Physical Journal Special Topics, 193(1), 185-192.

[7] Sun, H., Chen, W., & Chen, Y. (2009). Variable-order fractional differential operators in anomalous diffusion modeling. Physica A: Statistical Mechanics and its Applications, 388(21), 4586-4592.

[8] Akg¨ul, A., & Baleanu, D. (2017). On solutions of variable-order fractional differential equations. An International Journal of Optimization and Control: Theories & Applications (IJOCTA), 7(1), 112-116.

[9] Tavares, D., Almeida, R., & Torres, D. F. (2016). Caputo derivatives of fractional variable order: numerical approximations. Communications in Nonlinear Science and Numerical Simulation, 35, 69-87.

[10] Val´erio, D., & Da Costa, J. S. (2011). Variable-order fractional derivatives and theirnumerical approximations. Signal Processing, 91(3), 470-483.

[11] Yang, J., Yao, H., & Wu, B. (2018). An efficient numerical method for variable order fractional functional differential equation. Applied Mathematics Letters, 76, 221-226.

[12] Zhang, S., & Hu, L. (2019). Unique existence result of approximate solution to initial value problem for fractional differential equation of variable order involving the derivative arguments on the half-axis. Mathematics, 7(3), 286.

[13] Zhang, S., Sun, S., & Hu, L. (2018). Approximate solutions to initial value problem for differential equation of variable order. Journal of Fractional Calculus and Applications, 9(2), 93-112.

[14] Amar, B., Dumitru, B., Mohammed, S. S., Ali, H., & Mustafa, I. (2021). Boundary value problem for nonlinear fractional differential equations of variable order via Kuratowski MNC technique. Advances in Difference Equations, 2021(1), 1–19.

[15] Zhang, S., & Hu, L. (2019). The existence of solutions to boundary value problems for differential equations of variable order. Azerbaijan Journal of Mathematics, 9(1), 22-45.

[16] Benkerrouche, A., Souid, M. S., Chandok, S., & Hakem, A. (2021). Existence and Stability of a Caputo Variable-Order Boundary Value Problem. Journal of Mathematics, 2021.

[17] Refice, A., Souid, M. S., & Stamova, I. (2021). On the boundary value problems of Hadamard fractional differential equations of variable order via Kuratowski MNC technique. Mathematics, 9(10), 1134.

[18] Bouazza, Z., Souid, M. S., & Gunerhan, H. (2021). Multiterm boundary value problem of Caputo fractional differential equations of variable order. Advances in Difference Equations, 2021(1), 1-17.

[19] Zhang, S. (2018). The uniqueness result of solutions to initial value problems of differential equations of variable-order. Revista de la Real Academia de Ciencias Exactas, F´ısicas y Naturales. Serie A. Matem´aticas, 112(2), 407- 423.

[20] Amar, B., Souid, M. S., Kanokwan, S., & Ali, H. (2021). Implicit nonlinear fractional differential equations of variable order. Boundary Value Problems, 2021(1).

[21] Yakar, A., & Koksal, M. E. (2012). Existence results for solutions of nonlinear fractional differential equations. Abstract and Applied Analysis (Vol. 2012). Hindawi.

[22] An, J., & Chen, P. (2019). Uniqueness of solutions to initial value problem of fractional differential equations of variable-order. Dyn. Syst. Appl., 28, 607-623.

[23] Benchohra, M., & Lazreg, J. E. (2017). Existence and Ulam stability for nonlinear implicit fractional differential equations with Hadamard derivative. Stud. Univ. BabesBolyai Math., 62(1), 27-38.

[24] Benchohra, M., & Souid, M. S. (2015). L 1- Solutions of boundary value problems for implicit fractional order differential equations. Surveys in Mathematics & its Applications, 10.

[25] Ashyralyev, A., & Hicdurmaz, B. (2021). Multidimensional problems for nonlinear fractional Schr¨odinger differential and difference equations. Mathematical Methods in the Applied Sciences, 44(4), 2731-2751.

[26] Karako¸c, F. (2020). Existence and uniqueness for fractional order functional differential equations with Hilfer derivative. Differ. Equ. Appl., 12, 323-336.

[27] Devi, J. V., & Sreedhar, C. V. (2016). Generalized Monotone Iterative Method for Caputo Fractional Integro-differential Equation. European Journal of Pure and Applied Mathematics, 9(4), 346-359.

[28] de Oliveira, E. C., & Sousa, J. V. D. C. (2018). Ulam–Hyers–Rassias stability for a class of fractional integro-differential equations. Results in Mathematics, 73(3), 1-16.

[29] Bai, Y., & Kong, H. (2017). Existence of solutions for nonlinear Caputo-Hadamard fractional differential equations via the method of upper and lower solutions. J. Nonlinear Sci. Appl., 10(1), 5744-5752.

[30] Samko, S.G. (1995). Fractional integration and differentiation of variable order. Analysis Mathematica, 21(3), 213-236.

[31] Kilbas, A. A., Srivastava, H. M., & Trujillo, J. J. (2006). Theory and Applications of Fractional Differential Equations. (Vol. 204). Elsevier.

[32] Zhang, S. (2013). Existence of solutions for two-point boundary-value problems with singular differential equations of variable order. Electronic Journal of Differential Equations, 2013(245), 1-16.

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An International Journal of Optimization and Control: Theories & Applications, Electronic ISSN: 2146-5703 Print ISSN: 2146-0957, Published by AccScience Publishing