3,074 results on '"Caputo derivative"'
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2. Hyers–Ulam–Rassias stability of fractional delay differential equations with Caputo derivative.
- Author
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Benzarouala, Chaimaa and Tunç, Cemil
- Abstract
This paper is devoted to the study of Hyers–Ulam–Rassias (HUR) stability of a nonlinear Caputo fractional delay differential equation (CFrDDE) with multiple variable time delays. We obtain two new theorems with regard to HUR stability of the CFrDDE on bounded and unbounded intervals. The method of the proofs is based on the fixed point approach. The HUR stability results of this paper have indispensable contributions to theory of Ulam stabilities of CFrDDEs and some earlier results in the literature. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Constructing the fractional series solutions for time-fractional K-dV equation using Laplace residual power series technique.
- Author
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Yadav, Sanjeev, Vats, Ramesh Kumar, and Rao, Anjali
- Subjects
- *
POWER series , *ELASTIC wave propagation , *CAPUTO fractional derivatives , *FRACTIONAL powers , *DECOMPOSITION method , *HEAT equation , *LAPLACE transformation - Abstract
In this article, we construct the series solution of the time-fractional Korteveg de Vries (K-dV) equation through a computational approach named as Laplace residual power series (LRPS) that combines the Laplace transform with the residual power series method (RPS). Time-fractional K-dV equation is used to modeled various real life phenomena like propagation of waves in elastic rods, dispersion effects in shallow coastal regions, anomalous diffusion observed in financial markets. The Caputo fractional derivative is used in the formulation of time-fractional K-dV equation. LRPS method is characterized by its rapid convergence and easy finding of the unknown coefficients using the concept of limit at infinity without any perturbation, discretization and linearization. To assess the effectiveness of proposed computational strategy, we perform a comparative analysis among the fractional residual power series method, the Adomian decomposition method, and the RPS method. Additionally, we examine the convergence of the fractional series solution across different α values and assess the solution's behavior as the time domain increased. The efficiency and authenticity of the LRPS method is shown by computing the absolute error, relative error and residual error. This work is supported by 2D and 3D graphical representations made in accordance with Maple and MATLAB. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. Mathematical frameworks for investigating fractional nonlinear coupled Korteweg-de Vries and Burger's equations.
- Author
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Noor, Saima, Albalawi, Wedad, Shah, Rasool, Al-Sawalha, M. Mossa, Ismaeel, Sherif M. E., Qazza, Ahmad, and Gasimov, Yusif
- Subjects
BURGERS' equation ,SCIENTIFIC knowledge ,NONLINEAR boundary value problems ,FRACTIONAL calculus ,POWER series ,FRACTIONAL powers ,QUASILINEARIZATION - Abstract
This article utilizes the Aboodh residual power series and Aboodh transform iteration methods to address fractional nonlinear systems. Based on these techniques, a system is introduced to achieve approximate solutions of fractional nonlinear Korteweg-de Vries (KdV) equations and coupled Burger's equations with initial conditions, which are developed by replacing some integer-order time derivatives by fractional derivatives. The fractional derivatives are described in the Caputo sense. As a result, the Aboodh residual power series and Aboodh transform iteration methods for integer-order partial differential equations may be easily used to generate explicit and numerical solutions to fractional partial differential equations. The results are determined as convergent series with easily computable components. The results of applying this process to the analyzed examples demonstrate that the new technique is very accurate and efficient. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
5. Semilinear multi-term fractional in time diffusion with memory.
- Author
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Vasylyeva, Nataliya, Kochubei, Anatoly, Shepelsky, Dmitry, and Orsingher, Enzo
- Subjects
FRACTIONAL calculus ,FRACTIONAL differential equations ,SEMILINEAR elliptic equations ,BOUNDARY value problems ,MEMORY ,CAPUTO fractional derivatives ,ELLIPTIC operators - Abstract
In this study, the initial-boundary value problems to semilinear integro-differential equations with multi-term fractional Caputo derivatives are analyzed. A particular case of these equations models oxygen diffusion through capillaries. Under proper requirements on the given data in the model, the classical and strong solvability of these problems for any finite time interval [0, T] are proved via so-called continuation method. The key point in this approach is finding suitable a priori estimates of a solution in the fractional Hölder and Sobolev spaces. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
6. Fractional-Order Sliding Mode Observer for Actuator Fault Estimation in a Quadrotor UAV.
- Author
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Borja-Jaimes, Vicente, Coronel-Escamilla, Antonio, Escobar-Jiménez, Ricardo Fabricio, Adam-Medina, Manuel, Guerrero-Ramírez, Gerardo Vicente, Sánchez-Coronado, Eduardo Mael, and García-Morales, Jarniel
- Subjects
- *
ACTUATORS - Abstract
In this paper, we present the design of a fractional-order sliding mode observer (FO-SMO) for actuator fault estimation in a quadrotor unmanned aerial vehicle (QUAV) system. Actuator faults can significantly compromise the stability and performance of QUAV systems; therefore, early detection and compensation are crucial. Sliding mode observers (SMOs) have recently demonstrated their accuracy in estimating faults in QUAV systems under matched uncertainties. However, existing SMOs encounter difficulties associated with chattering and sensitivity to initial conditions and noise. These challenges significantly impact the precision of fault estimation and may even render fault estimation impossible depending on the magnitude of the fault. To address these challenges, we propose a new fractional-order SMO structure based on the Caputo derivative definition. To demonstrate the effectiveness of the proposed FO-SMO in overcoming the limitations associated with classical SMOs, we assess the robustness of the FO-SMO under three distinct scenarios. First, we examined its performance in estimating actuator faults under varying initial conditions. Second, we evaluated its ability to handle significant chattering phenomena during fault estimation. Finally, we analyzed its performance in fault estimation under noisy conditions. For comparison purposes, we assess the performance of both observers using the Normalized Root-Mean-Square Error (NRMSE) criterion. The results demonstrate that our approach enables more accurate actuator fault estimation, particularly in scenarios involving chattering phenomena and noise. In contrast, the performance of classical (non-fractional) SMO suffers significantly under these conditions. We concluded that our FO-SMO is more robust to initial conditions, chattering phenomena, and noise than the classical SMO. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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7. Analysis of coupled system of q$$ q $$‐fractional Langevin differential equations with q$$ q $$‐fractional integral conditions.
- Author
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Zhang, Keyu, Khalid, Khansa Hina, Zada, Akbar, Popa, Ioan‐Lucian, Xu, Jiafa, and Kallekh, Afef
- Abstract
In this dissertation, we study the coupled system of q$$ q $$‐fractional Langevin differential equations involving q$$ q $$‐Caputo derivative having q$$ q $$‐fractional integral conditions. With the help of some adequate conditions, we investigate the uniqueness and existence of mild solution of the aforementioned system. We also analyze various kinds of Ulam's stability. Banach fixed point theorem and Leray–Schauder of cone type are used to illustrate the existence and uniqueness results. We also used non‐linear functional analysis methods to explore variety of stability types. An example is provided to clearly demonstrate our theoretical outcomes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
8. A new application of fractional glucose-insulin model and numerical solutions.
- Author
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ÖZTÜRK, Zafer, BİLGİL, Halis, and SORGUN, Sezer
- Abstract
Along with the developing technology, obesity and diabetes are increasing rapidly among people. The identification of diabetes diseases, modeling, predicting their behavior, conducting simulations, studying control and treatment methods using mathematical methods has become of great importance. In this paper, we have obtained numerical solutions by considering the glucose-insulin fractional model. This model consists of three compartments: the blood glucose concentration (G), the blood insulin concentration (I) and the ready-to-absorb glucose concentration (D) in the small intestine. The fractional derivative is used in the sense of Caputo. By performing mathematical analyzes for the Glucose-Insulin fractional mathematical model, numerical results were obtained with the help of the Euler method and graphs were drawn. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
9. A Quasilinearization Approach for Identification Control Vectors in Fractional-Order Nonlinear Systems.
- Author
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Koleva, Miglena N. and Vulkov, Lubin G.
- Subjects
- *
NONLINEAR systems , *VECTOR control , *QUASILINEARIZATION , *ORDINARY differential equations , *NONLINEAR differential equations , *TIKHONOV regularization - Abstract
This paper is concerned with solving the problem of identifying the control vector problem for a fractional multi-order system of nonlinear ordinary differential equations (ODEs). We describe a quasilinearization approach, based on minimization of a quadratic functional, to compute the values of the unknown parameter vector. Numerical algorithm combining the method with appropriate fractional derivative approximation on graded mesh is applied to SIS and SEIR problems to illustrate the efficiency and accuracy. Tikhonov regularization is implemented to improve the convergence. Results from computations, both with noisy-free and noisy data, are provided and discussed. Simulations with real data are also performed. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
10. Analysis and numerical simulation of fractional Bloch model arising in magnetic resonance imaging using novel iterative technique.
- Author
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Rahul and Prakash, Amit
- Subjects
- *
MAGNETIC resonance imaging , *NUMERICAL analysis , *INTEGRAL calculus , *BLOCH equations , *COMPUTER simulation - Abstract
The present work investigates Bloch equations arising in magnetic resonance with Caputo and Caputo Fabrizio derivatives. Banach's fixed point approach is used to construct the existence theory for the model's solution. Also, the stability of the solution is established by Ulam–Hyers conditions. A novel 3-step iterative method is used for the considered model's numerical simulation with Caputo and Caputo Fabrizio derivative. This iterative method is formulated by combining Lagrange's interpolation with the fundamental theorem of integral calculus. The proposed method's error estimate is provided. The simulation results are displayed in tabulated and graphical form for distinct values of fractional order. The results demonstrate how the proposed method is accurate and appropriate for analysing fractional Bloch model. Further, this technique can also approximate the solution of other equations arising in engineering physics and quantum fields. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
11. Efficient Numerical Solutions for Fuzzy Time Fractional Diffusion Equations Using Two Explicit Compact Finite Difference Methods.
- Author
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Batiha, Belal
- Subjects
FINITE difference method ,HEAT equation ,FRACTIONAL differential equations ,PARTIAL differential equations ,FINITE differences ,CAPUTO fractional derivatives - Abstract
This article introduces an extension of classical fuzzy partial differential equations, known as fuzzy fractional partial differential equations. These equations provide a better explanation for certain phenomena. We focus on solving the fuzzy time diffusion equation with a fractional order of 0 < α ≤ 1, using two explicit compact finite difference schemes that are the compact forward time center space (CFTCS) and compact Saulyev's scheme. The time fractional derivative uses the Caputo definition. The double-parametric form approach is used to transfer the governing equation from an uncertain to a crisp form. To ensure stability, we apply the von Neumann method to show that CFTCS is conditionally stable, while compact Saulyev's is unconditionally stable. A numerical example is provided to demonstrate the practicality of our proposed schemes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
12. Well-posedness and regularization for Caputo fractional elliptic equation with nonlocal condition.
- Author
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Can, Nguyen Huu, Tri, Vo Viet, Minh, Vo Ngoc, and Tuan, Nguyen Huy
- Subjects
ELLIPTIC equations ,HILBERT space ,MATHEMATICAL regularization - Abstract
This paper is first study for considering the elliptic equation with Caputo derivative and nonlocal integral condition. We obtain the upper bound of some information of the mild solution. The second contribution is to provide the lower bound of the solution and its derivative at terminal time. Moreover, we prove the non-correction of the problem in the sense of Hadamard. We continue to provide the regularized solution. We also establish the convergence rate between the regularized solution and the sought solution. The main tool is the use of upper and lower bounds of the Mittag-Leffler function, combined with analysis in Hilbert scale space. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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13. Globally Well-Posedness Results of the Fractional Navier–Stokes Equations on the Heisenberg Group.
- Author
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Liu, Xiaolin and Zhou, Yong
- Abstract
In this paper, we investigate the existence and uniqueness of mild solutions to the fractional Navier–Stokes equations related to time derivative of order α ∈ (0 , 1) . And the mild solution is associated with the sublaplacian provided by the left invariant vector fields on the Heisenberg group. We demonstrate that when the nonlinear external force term matches the applicable conditions, the global mild solution can be obtained by using improved Ascoli–Arzela theorem and Schaefer's fixed point theorem. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
14. Non-monotone Boosted DC and Caputo Fractional Tailored Finite Point Algorithm for Rician Denoising and Deblurring.
- Author
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Sun, Kexin, Xu, Youcai, and Feng, Minfu
- Abstract
Since MRI is often corrupted by Rician noise, in medical image processing, Rician denoising and deblurring is an important research. In this work, considering the validity of the non-convex log term in the Rician denoising and deblurring model estimated by the maximum a posteriori (MAP) and total variation, we apply nmBDCA to deal with the model. A non-monotonic line search applied in nmBDCA can achieve possible growth of objective function values controlled by parameters. After that, the obtained convex problem is solved separately by alternating direction method of multipliers (ADMM). For u - subproblem in ADMM scheme, Caputo fractional derivative and tailored finite point method are applied to denoising, which retain more texture details and suppress the staircase effect. We also demonstrate the convergence of the model and perform the stability analysis on the numerical scheme. Numerical results show that our method can well improve the quality of image restoration. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
15. Beam deflection coupled systems of fractional differential equations: existence of solutions, Ulam–Hyers stability and travelling waves.
- Author
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Bensassa, Kamel, Dahmani, Zoubir, Rakah, Mahdi, and Sarikaya, Mehmet Zeki
- Abstract
In this paper, we study a coupled system of beam deflection type that involves nonlinear equations with sequential Caputo fractional derivatives. Under flexible/fixed end-conditions, two main theorems on the existence and uniqueness of solutions are proved by using two fixed point theorems. Some examples are discussed to illustrate the applications of the existence and uniqueness of solution results. Another main result on the Ulam–Hyers stability of solutions for the introduced system is also discussed. Some examples of stability are discussed. New travelling wave solutions are obtained for another conformable coupled system of beam type that has a connection with the first considered system. A conclusion follows at the end. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
16. Bipartite Synchronization of Fractional Order Multiple Memristor Coupled Delayed Neural Networks with Event Triggered Pinning Control.
- Author
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Dhivakaran, P. Babu, Gowrisankar, M., and Vinodkumar, A.
- Subjects
SYNCHRONIZATION - Abstract
This paper investigates the leader and leaderless bipartite synchronization with the signed network utilizing the model of multiple memristor and coupled delayed neural network in an event-triggered pinning control. The usage of the descriptor method in fractional-order neural networks in case of a non-differentiable delay can be seen in this paper. Further, Lyapunov functional criteria, including Lur'e Postnikov Lyapunov functional, is established, and bipartite leader and leaderless synchronization are proved. The obtained numerical results can be seen as accurate to the theoretical results. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
17. Inverse source problem for a space-time fractional diffusion equation.
- Author
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BenSaleh, Mohamed and Maatoug, Hassine
- Abstract
This paper is concerned with an inverse source problem for a space-time fractional diffusion equation. We aim to identify an unknown source term from partially observed data. The employed model involves the Caputo fractional derivative in time and the non-local fractional Laplacian operator in space. The well-posedness of the forward problem is discussed. The considered ill-posed inverse source problem is formulated as a minimization one. The existence, uniqueness and stability of the solution of the minimization problem are examined. An iterative process is developed for identifying the unknown source term. A numerical implementation of the proposed approach is performed. The convergence of the discretized fractional derivatives is analyzed. The efficiency and accuracy of the proposed identification algorithm are confirmed by some numerical experiments. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
18. Approximating fractional calculus operators with general analytic kernel by Stancu variant of modified Bernstein–Kantorovich operators.
- Author
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Ali Özarslan, Mehmet
- Subjects
- *
FRACTIONAL calculus , *POSITIVE operators , *INTEGRAL operators , *LIPSCHITZ continuity , *LINEAR operators - Abstract
The main aim of this paper is to approximate the fractional calculus (FC) operator with general analytic kernel by using auxiliary newly defined linear positive operators. For this purpose, we introduce the Stancu variant of modified Bernstein–Kantorovich operators and investigate their simultaneous approximation properties. Then we construct new operators by means of these auxiliary operators, and based on the obtained results, we prove the main theorems on the approximation of the general FC operators. We also obtain some quantitative estimates for this approximation in terms of modulus of continuity and Lipschitz class functions. Additionally, we exhibit our approximation results for the well‐known FC operators such as Riemann–Liouville integral, Caputo derivative, Prabhakar integral, and Caputo–Prabhakar derivative. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
19. A homotopy-based computational scheme for two-dimensional fractional cable equation.
- Author
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Kumar, C. V. Darshan, Prakasha, D. G., Veeresha, P., and Kapoor, Mamta
- Abstract
In this paper, we examine the time-dependent two-dimensional cable equation of fractional order in terms of the Caputo fractional derivative. This cable equation plays a vital role in diverse areas of electrophysiology and modeling neuronal dynamics. This paper conveys a precise semi-analytical method called the
q -homotopy analysis transform method to solve the fractional cable equation. The proposed method is based on the conjunction of theq -homotopy analysis method and Laplace transform. We explained the uniqueness of the solution produced by the suggested method with the help of Banach’s fixed-point theory. The results obtained through the considered method are in the form of a series solution, and they converge rapidly. The obtained outcomes were in good agreement with the exact solution and are discussed through the 3D plots and graphs that express the physical representation of the considered equation. It shows that the proposed technique used here is reliable, well-organized and effective in analyzing the considered non-homogeneous fractional differential equations arising in various branches of science and engineering. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
20. Qualitative analysis of variable‐order fractional differential equations with constant delay.
- Author
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Naveen, S. and Parthiban, V.
- Subjects
- *
FRACTIONAL differential equations , *DELAY differential equations - Abstract
This paper presents the computational analysis of fractional differential equations of variable‐order delay systems. To the proposed problem, the existence of solutions is derived using Arzela‐Ascoli theorem, and the Banach fixed point theorem is used for uniqueness results. To investigate and address the computational solutions, Adams‐Bashforth‐Moulton technique is established. To demonstrate the method's efficiency, computational simulations of chaotic behaviors in several one‐dimensional delayed systems with distinct variable orders are employed. The numerical solution of the proposed problem gives high precision approximations. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
21. A shifted Chebyshev operational matrix method for pantograph‐type nonlinear fractional differential equations.
- Author
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Yang, Changqing and Lv, Xiaoguang
- Subjects
- *
NONLINEAR differential equations , *CAPUTO fractional derivatives , *DIFFERENTIAL equations , *CHEBYSHEV polynomials , *CHEBYSHEV approximation , *FRACTIONAL differential equations - Abstract
In this study, we investigate and analyze an approximation of the Chebyshev polynomials for pantograph‐type fractional‐order differential equations. First, we construct the operational matrices of pantograph and Caputo fractional derivatives using Chebyshev interpolation. Then, the obtained matrices are utilized to approximate the fractional derivative. We also provide a detailed convergence analysis in terms of the weighted square norm. Finally, we describe and discuss the results of three numerical experiments conducted to confirm the applicability and accuracy of the computational scheme. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
22. Analysis and simulation of arbitrary order shallow water and Drinfeld–Sokolov–Wilson equations: Natural transform decomposition method.
- Author
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Ali, Nasir, Zada, Laiq, Nawaz, Rashid, Jamshed, Wasim, Ibrahim, Rabha W., Guedri, Kamel, and Khalifa, Hamiden Abd El-Wahed
- Subjects
- *
SHALLOW-water equations , *DECOMPOSITION method , *WAVE equation , *FRACTIONAL calculus , *DIFFERENTIAL equations , *IMAGE encryption - Abstract
Within the context of fractional calculus, we investigate novel mathematical possibilities. In this context, using the fractional dispersion relations for the fractional wave equation, we explore a class of the generalized fractional wave equation numerically. Some important classes of differential equations in the theory of wave studies are Drinfeld–Sokolov–Wilson and Shallow Water equations. In this effort, the natural transform decomposition technique has been implemented to investigate the explicit result of fractional-order coupled schemes of Drinfeld–Sokolov–Wilson and Shallow Water coupled systems. The proposed method is obtained by coupling the Natural transform with the Adomian decomposition process. The current technique significantly works to find the approximate solution without any discretization or constraining parameter assumptions. The obtained numerical and graphical outcomes by the devised technique are compared with the available exact result to verify the convergence of the method. For mathematical calculations, the Mathematica software package is used. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
23. Explicit scheme for solving variable-order time-fractional initial boundary value problems.
- Author
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Kanwal, Asia, Boulaaras, Salah, Shafqat, Ramsha, Taufeeq, Bilal, and ur Rahman, Mati
- Subjects
- *
BOUNDARY value problems , *INITIAL value problems , *FRACTIONAL calculus , *MATHEMATICAL physics , *FINITE differences , *FOURIER analysis - Abstract
The creation of an explicit finite difference scheme with the express purpose of resolving initial boundary value issues with linear and semi-linear variable-order temporal fractional properties is presented in this study. The rationale behind the utilization of the Caputo derivative in this scheme stems from its known importance in fractional calculus, an area of study that has attracted significant interest in the mathematical sciences and physics. Because of its special capacity to accurately represent physical memory and inheritance, the Caputo derivative is a relevant and appropriate option for representing the fractional features present in the issues this study attempts to address. Moreover, a detailed Fourier analysis of the explicit finite difference scheme's stability is shown, demonstrating its conditional stability. Finally, certain numerical example solutions are reviewed and MATLAB-based graphic presentations are made. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
24. Iterative solution of the fractional Wu-Zhang equation under Caputo derivative operator.
- Author
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Yasmin, Humaira, Alderremy, A. A., Shah, Rasool, Ganie, Abdul Hamid, Aly, Shaban, Marwan Alquran, Akgül,, Ali, Jajarmi, Amin, and Anjum, Naveed
- Subjects
NUMERICAL analysis ,DIFFERENTIAL equations ,EQUATIONS - Abstract
In this study, we employ the effective iterative method to address the fractional Wu-Zhang Equation within the framework of the Caputo Derivative. The effective iterative method offers a practical approach to obtaining approximate solutions for fractional differential equations. We seek to provide insights into its solution and behavior by applying this method to the Wu-Zhang Equation. Through numerical analysis and the presentation of relevant tables and Figures, we demonstrate the accuracy and efficiency of this method in solving the fractional Wu-Zhang Equation. This research contributes to the understanding and solution of fractional-order differential equations and their applications in various scientific and engineering domains. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
25. New Results on (r , k , μ) -Riemann–Liouville Fractional Operators in Complex Domain with Applications.
- Author
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Tayyah, Adel Salim and Atshan, Waggas Galib
- Subjects
- *
ORDINARY differential equations , *GENERALIZED integrals , *WAVE equation , *STAR-like functions , *INTEGRAL operators - Abstract
This paper introduces fractional operators in the complex domain as generalizations for the Srivastava–Owa operators. Some properties for the above operators are also provided. We discuss the convexity and starlikeness of the generalized Libera integral operator. A condition for the convexity and starlikeness of the solutions of fractional differential equations is provided. Finally, a fractional differential equation is converted into an ordinary differential equation by wave transformation; illustrative examples are provided to clarify the solution within the complex domain. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
26. An implicit scheme for time-fractional coupled generalized Burgers' equation.
- Author
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Vigo-Aguiar, J., Chawla, Reetika, Kumar, Devendra, and Mazumdar, Tapas
- Subjects
- *
BURGERS' equation , *HAMBURGERS , *NONLINEAR equations , *QUASILINEARIZATION - Abstract
This article presents an efficient implicit spline-based numerical technique to solve the time-fractional generalized coupled Burgers' equation. The time-fractional derivative is considered in the Caputo sense. The time discretization of the fractional derivative is discussed using the quadrature formula. The quasilinearization process is used to linearize this non-linear problem. In this work, the formulation of the numerical scheme is broadly discussed using cubic B-spline functions. The stability of the proposed method is proved theoretically through Von-Neumann analysis. The reliability and efficiency are demonstrated by numerical experiments that validate theoretical results via tables and plots. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
27. A Fractional-Differential Approach to Numerical Simulation of Electron-Induced Charging of Ferroelectrics.
- Author
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Moroz, L. I. and Maslovskaya, A. G.
- Abstract
The paper proposes a fractional-differential modification of the mathematical model of the process of nonstationary charging of polar dielectric materials under conditions of irradiation with medium-energy electron beams. The mathematical formalization is based on a spherically symmetric diffusion–drift equation with a fractional time derivative. An implicit finite-difference scheme is constructed using the Caputo derivative approximation. An application program has been developed in Matlab software that implements the designed computational algorithm. Verification of an approximate solution of the problem is demonstrated using a test example. The results of computational experiments to evaluate the characteristics of field effects of injected charges in ferroelectrics when varying the order of fractional differentiation in subdiffusion regimes are presented. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
28. Variational and error estimation for a frictionless contact problem in thermo-viscoelasticity with time fractional derivatives.
- Author
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Bouallala, Mustapha
- Subjects
VISCOELASTICITY ,APPROXIMATION error - Abstract
This study is devoted to the study of a new quasistatic contact model for a thermo-viscoelastic body and a thermally conductive foundation. The constitutive relations follow the fractional Kelvin-Voigt law, while the contact is characterized by a damped normal response. We establish a variational formulation of the model and demonstrate the existence of a weak solution. Furthermore, we investigate the numerical approach by employing spatially semi-discrete and fully discrete finite element schemes with the Grünwald–Letnikov scheme. Finally, we derive error estimates for the approximations. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
29. Global solutions to a modified Fisher-KPP equation.
- Author
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Huy, Nguyen Dinh and Tuan, Nguyen Anh
- Subjects
EQUATIONS - Abstract
We study a Cauchy problem for a non-focal Fisher-KPP equation. We demonstrate in this study that as long as the habitat limit of the considered population (with the density described by the solution) is large enough relative to the growth rate, there is always a unique global solution to the problem regardless of the size of the non-negative initial data. The idea of the work can be outlined as follows. First, we prove the local existence and uniqueness of the mild solution. Second, we improve the temporal regularity of the solutions and show that the non-negativity of the initial data is preserved for this solution. Having proved these preliminary steps, we derive an energy estimate by which we can control the solution for all time. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
30. Explicit scheme for solving variable-order time-fractional initial boundary value problems
- Author
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Asia Kanwal, Salah Boulaaras, Ramsha Shafqat, Bilal Taufeeq, and Mati ur Rahman
- Subjects
Fractional derivatives ,Caputo derivative ,Explicit scheme ,Stability analysis ,Initial boundary value problem ,Fractional diffusion equations ,Medicine ,Science - Abstract
Abstract The creation of an explicit finite difference scheme with the express purpose of resolving initial boundary value issues with linear and semi-linear variable-order temporal fractional properties is presented in this study. The rationale behind the utilization of the Caputo derivative in this scheme stems from its known importance in fractional calculus, an area of study that has attracted significant interest in the mathematical sciences and physics. Because of its special capacity to accurately represent physical memory and inheritance, the Caputo derivative is a relevant and appropriate option for representing the fractional features present in the issues this study attempts to address. Moreover, a detailed Fourier analysis of the explicit finite difference scheme’s stability is shown, demonstrating its conditional stability. Finally, certain numerical example solutions are reviewed and MATLAB-based graphic presentations are made.
- Published
- 2024
- Full Text
- View/download PDF
31. Exact solutions of (1+2)-dimensional non-linear time-space fractional PDEs
- Author
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Kumar, Manoj
- Published
- 2024
- Full Text
- View/download PDF
32. Numerical simulation of nonlinear fractional delay differential equations with Mittag-Leffler kernels.
- Author
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Odibat, Zaid and Baleanu, Dumitru
- Subjects
- *
FRACTIONAL differential equations , *DELAY differential equations , *NUMERICAL solutions to nonlinear differential equations , *COMPUTER simulation - Abstract
This study is concerned with finding numerical solutions of nonlinear delay differential equations involving extended Mittag-Leffler fractional derivatives of the Caputo-type. The main benefit of the used extension is to address the complexity resulting from the limitations of using fractional derivatives with non-singular Mittag-Leffler kernels. We discussed the existence and uniqueness of solutions for the studied delay models. Next, we modified an Adams-type method to numerically solve fractional delay differential equations combined with Mittag-Leffler kernels. A new type of solution belonging to the L 1 space is presented for the studied models using the proposed scheme. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
33. Optimal spectral Galerkin approximation for time and space fractional reaction-diffusion equations.
- Author
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Hendy, A.S., Qiao, L., Aldraiweesh, A., and Zaky, M.A.
- Subjects
- *
RIESZ spaces , *REACTION-diffusion equations , *LAPLACIAN operator , *SPACETIME - Abstract
A one-dimensional space-time fractional reaction-diffusion problem is considered. We present a complete theory for the solution of the time-space fractional reaction-diffusion model, including existence and uniqueness in the case of using the spectral representation of the fractional Laplacian operator. An optimal error estimate is presented for the Galerkin spectral approximation of the problem under consideration. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
34. A Chebyshev neural network-based numerical scheme to solve distributed-order fractional differential equations.
- Author
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Sivalingam, S.M., Kumar, Pushpendra, and Govindaraj, V.
- Subjects
- *
MACHINE learning - Abstract
This study aims to develop a first-order Chebyshev neural network-based technique for solving ordinary and partial distributed-order fractional differential equations. The neural network is used as a trial solution to construct the loss function. The loss function is utilized to train the neural network via an extreme learning machine and obtain the solution. The novelty of this work is developing and implementing a neural network-based framework for distributed-order fractional differential equations via an extreme learning machine. The proposed method is validated on several test problems. The error metrics utilized in the study include the absolute error and the L 2 error. A comparison with other previously available approaches is presented. Also, we provide the computation time of the method. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
35. Two efficient techniques for analysis and simulation of time-fractional Tricomi equation.
- Author
-
Mohan, Lalit and Prakash, Amit
- Abstract
In this work, the time-fractional Tricomi equation is investigated via two efficient computational techniques. This equation is used to explain the nearly sonic speed gas dynamics phenomenon. The Homotopy perturbation transform technique, which is a combination of Laplace transform and a semi-analytical technique, and Homotopy analysis method are used to solve the time-fractional Tricomi equation. The existence and uniqueness of the solution is analyzed by using two different fixed-point theorems. Finally, the effectiveness of the proposed techniques is illustrated through two test examples by comparing the absolute error of proposed techniques with the existing techniques and the result achieved in this paper benefits (but not limited to) the gas flow dynamics. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
36. An efficient fourth order Hermite spline collocation method for time fractional diffusion equation describing anomalous diffusion in two space variables.
- Author
-
Priyanka, Sahani, Saroj, and Arora, Shelly
- Subjects
HEAT equation ,SPLINES ,ALGEBRAIC equations ,SOBOLEV spaces ,COLLOCATION (Linguistics) ,COLLOCATION methods ,SPLINE theory - Abstract
Anomalous diffusion of particles in fluids is better described by the fractional diffusion models. A robust hybrid numerical algorithm for a two-dimensional time fractional diffusion equation with the source term is presented. The well-known L1 scheme is considered for semi-discretization of the diffusion equation. To interpolate the semi-discretized equation, orthogonal collocation with bi-quintic Hermite splines as the basis is chosen for the smooth solution. Quintic Hermite splines interpolate the solution as well as its first and second order derivatives. The technique reduces the proposed problem to an algebraic system of equations. Stability analysis of the implicit scheme is studied using H ~ 1 m -norm defined in Sobolev space. The optimal order of convergence is found to be of order O (h 4) in spatial direction and is of order O (Δ t) 2 - α in the temporal direction where h is the step size in space direction and Δ t is the step size in time direction and α is the fractional order of the derivative. Numerical illustrations have been presented to discuss the applicability of the proposed hybrid numerical technique to the problems having fractional order derivative. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
37. A novel technique to study the solutions of time fractional nonlinear smoking epidemic model
- Author
-
K. Pavani and K. Raghavendar
- Subjects
Caputo–Fabrizio derivative ,Natural transform decomposition method ,Caputo derivative ,Atangana–Baleanu–Caputo derivative ,Smoking model ,Medicine ,Science - Abstract
Abstract The primary goal of the current work is to use a novel technique known as the natural transform decomposition method to approximate an analytical solution for the fractional smoking epidemic model. In the proposed method, fractional derivatives are considered in the Caputo, Caputo–Fabrizio, and Atangana–Baleanu–Caputo senses. An epidemic model is proposed to explain the dynamics of drug use among adults. Smoking is a serious issue everywhere in the world. Notwithstanding the overwhelming evidence against smoking, it is nonetheless a harmful habit that is widespread and accepted in society. The considered nonlinear mathematical model has been successfully used to explain how smoking has changed among people and its effects on public health in a community. The two states of being endemic and disease-free, which are when the disease dies out or persists in a population, have been compared using sensitivity analysis. The proposed technique has been used to solve the model, which consists of five compartmental agents representing various smokers identified, such as potential smokers V, occasional smokers G, smokers T, temporarily quitters O, and permanently quitters W. The results of the suggested method are contrasted with those of existing numerical methods. Finally, some numerical findings that illustrate the tables and figures are shown. The outcomes show that the proposed method is efficient and effective.
- Published
- 2024
- Full Text
- View/download PDF
38. Existence and stability of a q-Caputo fractional jerk differential equation having anti-periodic boundary conditions
- Author
-
Khansa Hina Khalid, Akbar Zada, Ioan-Lucian Popa, and Mohammad Esmael Samei
- Subjects
Fractional jerk equation ,Caputo derivative ,q-fractional differential equation ,Fixed point theorem ,Ulam–Hyers stability ,Analysis ,QA299.6-433 - Abstract
Abstract In this work, we analyze a q-fractional jerk problem having anti-periodic boundary conditions. The focus is on investigating whether a unique solution exists and remains stable under specific conditions. To prove the uniqueness of the solution, we employ a Banach fixed point theorem and a mathematical tool for establishing the presence of distinct fixed points. To demonstrate the availability of a solution, we utilize Leray–Schauder’s alternative, a method commonly employed in mathematical analysis. Furthermore, we examine and introduce different kinds of stability concepts for the given problem. In conclusion, we present several examples to illustrate and validate the outcomes of our study.
- Published
- 2024
- Full Text
- View/download PDF
39. Stability analysis of an implicit fractional integro-differential equation via integral boundary conditions
- Author
-
Mehboob Alam, Akbar Zada, and Thabet Abdeljawad
- Subjects
Caputo derivative ,Integral conditions ,Existence and uniqueness ,Stability ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
The primary objective of this research study is to analyze a boundary problem involving Caputo fractional integro-differential equations. The focus is on a differential equation with a nonlinear right-hand side composed of two terms. The stability analysis of a fractional integro-differential equation is presented using Ulam's concept. Furthermore, this research study establishes the correlation between the stated problem and the Volterra integral equation. The investigation proceeds by utilizing the renowned Banach and Krasnoselskii's fixed point theorems to explore the existence and uniqueness of solutions for the problem. Additionally, to provide tangible evidence of the abstract findings, two illustrative examples are presented.
- Published
- 2024
- Full Text
- View/download PDF
40. Exact solutions of (1+2)-dimensional non-linear time-space fractional PDEs
- Author
-
Manoj Kumar
- Subjects
Caputo derivative ,FPDEs ,Error analysis ,Sumudu transform ,Daftardar-Gejji and Jafari method ,Population model ,Mathematics ,QA1-939 - Abstract
Purpose – In this paper, the author presents a hybrid method along with its error analysis to solve (1+2)-dimensional non-linear time-space fractional partial differential equations (FPDEs). Design/methodology/approach – The proposed method is a combination of Sumudu transform and a semi-analytc technique Daftardar-Gejji and Jafari method (DGJM). Findings – The author solves various non-trivial examples using the proposed method. Moreover, the author obtained the solutions either in exact form or in a series that converges to a closed-form solution. The proposed method is a very good tool to solve this type of equations. Originality/value – The present work is original. To the best of the author's knowledge, this work is not done by anyone in the literature.
- Published
- 2024
- Full Text
- View/download PDF
41. A novel method to study time fractional coupled systems of shallow water equations arising in ocean engineering
- Author
-
K. Pavani and K. Raghavendar
- Subjects
shallow-water equation ,caputo-fabrizio derivative ,atangana-baleanu-caputo derivative ,caputo derivative ,Mathematics ,QA1-939 - Abstract
This study investigates solutions for the time-fractional coupled system of the shallow-water equations. The shallow-water equations are employed for the purpose of elucidating the dynamics of water motion in oceanic or sea environments. Also, the aforementioned system characterizes a thin fluid layer that maintains a hydrostatic equilibrium while exhibiting uniform density. Shallow water flows have a vertical dimension that is considerably smaller in magnitude than the typical horizontal dimension. In the current work, we employ an innovative and effective technique, known as the natural transform decomposition method, to obtain the solutions for these fractional systems. The present methodology entails the utilization of both singular and non-singular kernels for the purpose of handling fractional derivatives. The Banach fixed point theorem is employed to demonstrate the uniqueness and convergence of the obtained solution. The outcomes obtained from the application of the suggested methodology are compared to the exact solution and the results of other numerical methods found in the literature, including the modified homotopy analysis transform method, the residual power series method and the new iterative method. The results obtained from the proposed methodology are presented through the use of tabular and graphical simulations. The current framework effectively captures the behavior exhibited by different fractional orders. The findings illustrate the efficacy of the proposed method.
- Published
- 2024
- Full Text
- View/download PDF
42. Numerical simulation and analysis of Airy's-type equation
- Author
-
Alderremy Aisha A., Yasmin Humaira, Shah Rasool, Mahnashi Ali M., and Aly Shaban
- Subjects
elzaki transform ,new iterative method ,caputo derivative ,homotopy perturbation method ,fractional order airy’s-type equation ,Physics ,QC1-999 - Abstract
In this article, we propose a novel new iteration method and homotopy perturbation method (HPM) along with the Elzaki transform to compute the analytical and semi-analytical approximations of fractional Airy’s-type partial differential equations (FAPDEs) subjected to specific initial conditions. A convergent series solution form with easily commutable coefficients is used to examine and compare the performance of the suggested methods. Using Maple graphical method analysis, the behavior of the estimated series results at various fractional orders ς\varsigma and its modeling in two-dimensional (2D) and three-dimensional (3D) spaces are compared with actual results. Also, detailed descriptions of the physical and geometric implications of the calculated graphs in 2D and 3D spaces are provided. As a result, the obtained solutions of FAPDEs that are subject to particular initial values quite closely match the exact solutions. In this way, to solve FAPDEs quickly, the proposed approaches are considered to be more accurate and efficient.
- Published
- 2023
- Full Text
- View/download PDF
43. Numerical solution of fractional Bagley–Torvik equations using Lucas polynomials
- Author
-
M. Askari
- Subjects
fractional bagley–torvik equation ,caputo derivative ,lucas polynomials ,residual error function ,convergence analysis ,Applied mathematics. Quantitative methods ,T57-57.97 - Abstract
The aim of this article is to present a new method based on Lucas poly-nomials and residual error function for a numerical solution of fractional Bagley–Torvik equations. Here, the approximate solution is expanded as a linear combination of Lucas polynomials, and by using the collocation method, the original problem is reduced to a system of linear equations. So, the approximate solution to the problem could be found by solving this system. Then, by using the residual error function and approximating the error function by utilizing the same approach, we achieve more accurateresults. In addition, the convergence analysis of the method is investi-gated. Numerical examples demonstrate the validity and applicability of the method.
- Published
- 2023
- Full Text
- View/download PDF
44. Existence and stability of a q-Caputo fractional jerk differential equation having anti-periodic boundary conditions.
- Author
-
Khalid, Khansa Hina, Zada, Akbar, Popa, Ioan-Lucian, and Samei, Mohammad Esmael
- Subjects
- *
MATHEMATICAL analysis , *FRACTIONAL differential equations , *DIFFERENTIAL equations - Abstract
In this work, we analyze a q-fractional jerk problem having anti-periodic boundary conditions. The focus is on investigating whether a unique solution exists and remains stable under specific conditions. To prove the uniqueness of the solution, we employ a Banach fixed point theorem and a mathematical tool for establishing the presence of distinct fixed points. To demonstrate the availability of a solution, we utilize Leray–Schauder's alternative, a method commonly employed in mathematical analysis. Furthermore, we examine and introduce different kinds of stability concepts for the given problem. In conclusion, we present several examples to illustrate and validate the outcomes of our study. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
45. A novel technique to study the solutions of time fractional nonlinear smoking epidemic model.
- Author
-
Pavani, K. and Raghavendar, K.
- Subjects
- *
DECOMPOSITION method , *SMOKING , *EPIDEMICS , *ANALYTICAL solutions , *SENSITIVITY analysis - Abstract
The primary goal of the current work is to use a novel technique known as the natural transform decomposition method to approximate an analytical solution for the fractional smoking epidemic model. In the proposed method, fractional derivatives are considered in the Caputo, Caputo–Fabrizio, and Atangana–Baleanu–Caputo senses. An epidemic model is proposed to explain the dynamics of drug use among adults. Smoking is a serious issue everywhere in the world. Notwithstanding the overwhelming evidence against smoking, it is nonetheless a harmful habit that is widespread and accepted in society. The considered nonlinear mathematical model has been successfully used to explain how smoking has changed among people and its effects on public health in a community. The two states of being endemic and disease-free, which are when the disease dies out or persists in a population, have been compared using sensitivity analysis. The proposed technique has been used to solve the model, which consists of five compartmental agents representing various smokers identified, such as potential smokers V, occasional smokers G, smokers T, temporarily quitters O, and permanently quitters W. The results of the suggested method are contrasted with those of existing numerical methods. Finally, some numerical findings that illustrate the tables and figures are shown. The outcomes show that the proposed method is efficient and effective. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
46. Stability analysis of a second-order difference scheme for the time-fractional mixed sub-diffusion and diffusion-wave equation.
- Author
-
Alikhanov, Anatoly A., Asl, Mohammad Shahbazi, and Huang, Chengming
- Subjects
- *
FRACTIONAL calculus , *CAPUTO fractional derivatives , *WAVE equation , *FRACTIONAL integrals , *EQUATIONS , *NUMERICAL analysis - Abstract
This study investigates a class of initial-boundary value problems pertaining to the time-fractional mixed sub-diffusion and diffusion-wave equation (SDDWE). To facilitate the development of a numerical method and analysis, the original problem is transformed into a new integro-differential model which includes the Caputo derivatives and the Riemann-Liouville fractional integrals with orders belonging to (0, 1). By providing an a priori estimate of the exact solution, we have established the continuous dependence on the initial data and uniqueness of the solution for the problem. We propose a second-order method to approximate the fractional Riemann-Liouville integral and employ an L2-type formula to approximate the Caputo derivative. This results in a method with a temporal accuracy of second-order for approximating the considered model. The proof of the unconditional stability of the proposed difference scheme is established. Moreover, we demonstrate the proposed method's potential to construct and analyze a second-order L2-type numerical scheme for a broader class of the time-fractional mixed SDDWEs with multi-term time-fractional derivatives. Numerical results are presented to assess the accuracy of the method and validate the theoretical findings. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
47. Solution of the fractional Liouville equation by using Riemann–Liouville and Caputo derivatives in statistical mechanics.
- Author
-
Korichi, Z., Souigat, A., Bekhouche, R., and Meftah, M. T.
- Subjects
- *
IDEAL gases , *STATISTICAL mechanics , *BURGERS' equation , *EQUATIONS - Abstract
We solve the fractional Liouville equation by using Riemann–Liouville and Caputo derivatives for systems exhibiting noninteger power laws in their Hamiltonians. Based on the fractional Liouville equation, we calculate the density function (DF) of a classical ideal gas. If the Riemann–Liouville derivative is used, the DF is a function depending on both the momentum and the coordinate , but if the derivative in the Caputo sense is used, the DF is a constant independent of and . We also study a gas consisting of fractional oscillators in one-dimensional space and obtain that the DF of the system depends on the type of the derivative. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
48. An Efficient Cubic B-Spline Technique for Solving the Time Fractional Coupled Viscous Burgers Equation.
- Author
-
Ghafoor, Usama, Abbas, Muhammad, Akram, Tayyaba, El-Shewy, Emad K., Abdelrahman, Mahmoud A. E., and Abdo, Noura F.
- Subjects
- *
BURGERS' equation , *WATER depth , *SHOCK waves , *QUASILINEARIZATION , *FINITE differences - Abstract
The second order Burger's equation model is used to study the turbulent fluids, suspensions, shock waves, and the propagation of shallow water waves. In the present research, we investigate a numerical solution to the time fractional coupled-Burgers equation (TFCBE) using Crank–Nicolson and the cubic B-spline (CBS) approaches. The time derivative is addressed using Caputo's formula, while the CBS technique with the help of a θ -weighted scheme is utilized to discretize the first- and second-order spatial derivatives. The quasi-linearization technique is used to linearize the non-linear terms. The suggested scheme demonstrates unconditionally stable. Some numerical tests are utilized to evaluate the accuracy and feasibility of the current technique. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
49. Fuzzy Fractional Caputo Derivative of Susceptible-Infectious- Removed Epidemic Model for Childhood Diseases.
- Author
-
Subramanian, Suganya, Kumaran, Agilan, Ravichandran, Srilekha, Venugopal, Parthiban, Dhahri, Slim, and Ramasamy, Kavikumar
- Subjects
- *
CAPUTO fractional derivatives , *JUVENILE diseases , *FRACTIONAL differential equations , *LAPLACE transformation , *EPIDEMICS - Abstract
In this work, the susceptible-infectious-removed (SIR) dynamics are considered in relation to the effects on the health system. With the help of the Caputo derivative fractional-order method, the SIR epidemic model for childhood diseases is designed. Subsequenly, a set of sufficient conditions ensuring the existence and uniqueness of the addressed model by choosing proper fuzzy approximation methods. In particular, the fuzzy Laplace method along with the Adomian decomposition transform were employed to better understand the dynamical structures of childhood diseases. This leads to the development of an efficient methodology for solving fuzzy fractional differential equations using Laplace transforms and their inverses, specifically with the Caputo sense derivative. This innovative approach facilitates the numerical resolution of the problem and numerical simulations are executed for considering parameter values. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
50. Series and closed form solution of Caputo time-fractional wave and heat problems with the variable coefficients by a novel approach.
- Author
-
Liaqat, Muhammad Imran, Akgül, Ali, and Bayram, Mustafa
- Subjects
- *
POWER series , *FRACTIONAL powers , *DIFFERENTIAL equations , *DECOMPOSITION method , *NONLINEAR equations , *EULER-Lagrange equations , *PHYSIOLOGICAL effects of heat - Abstract
The mathematical efficiency of fractional-order differential equations in modeling real systems has been established. The first-order and second-order time derivatives are substituted in integer-order problems by a fractional derivative of order 0 < ω ≤ 1 , resulting in time-fractional heat and wave problems with variable coefficients. In this research, we analyze fractional-order wave and heat problems with variable coefficients within the framework of a Caputo derivative (CD) using the Elzaki residual power series method (ERPSM), which is a coupling of the residual power series method (RPSM) and the Elzaki transform (E-T). It relies on a novel form of fractional power series (FPS), which provides a convergent series as a solution. The accuracy and convergence rates have been proven by the relative, absolute, and recurrence error analyses, demonstrating the validity of the recommended approach. By employing the simple limit principle at zero, the ERPSM excels at calculating the coefficients of terms in a FPS, but other well-known approaches such as Adomian decomposition, variational iteration, and homotopy perturbation need integration, while the RPSM needs the derivative, both of which are challenging in fractional contexts. ERPSM is also more effective than various series solution methods due to the avoidance of Adomian's and He's polynomials to solve nonlinear problems. The results obtained using the ERPSM show excellent agreement with the natural transform decomposition method and homotopy analysis transform method, demonstrating that the ERPSM is an effective approach for obtaining the approximate and closed-form solutions of fractional models. We established that our approach for fractional models is accurate and straightforward and researcher can use this approach to solve various problems. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
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