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    Wyświetlanie 1-7 z 7
    Tytuł:
    Solving linear Fredholm integro-differential equation by Nyström method
    Autorzy:
    Tair, Boutheina
    Guebbai, Hamza
    Segni, Sami
    Ghiat, Mourad
    Powiązania:
    https://bibliotekanauki.pl/articles/1839836.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
    Tematy:
    Fredholm integral equation
    system of integral equations
    integro-differential equations
    Nyström method
    równanie całkowe Fredholma
    układ równań całkowych
    równanie całkowo-różniczkowe
    metoda Nyströma
    Opis:
    The study of the solution’s existence and uniqueness for the linear integro-differential Fredholm equation and the application of the Nyström method to approximate the solution is what we will present in this paper. We use the Neumann theorem to construct a sufficient condition that ensures the solution’s existence and uniqueness of our problem in the Banach space C1 [a,b]. We have applied the Nystrom method based on the trapezoidal ¨ rule to avoid adding other conditions in order to the approximation method’s convergence. The Nyström method discretizes the integro-differential equation into solving a linear system. Only with the existence and uniqueness condition, we show the solution’s existence and uniqueness of the linear system and the convergence of the numerical solution to the exact solution in infinite norm sense. We present two theorems to give a good estimate of the error. Also, to show the efficiency and accuracy of the Nyström method, some numerical examples will be provided at the end of this work.
    Źródło:
    Journal of Applied Mathematics and Computational Mechanics; 2021, 20, 3; 53-64
    2299-9965
    Pojawia się w:
    Journal of Applied Mathematics and Computational Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laplace-Carson integral transform for exact solutions of non-integer order initial value problems with Caputo operator
    Autorzy:
    Kumar, Prem
    Qureshi, Sania
    Powiązania:
    https://bibliotekanauki.pl/articles/122736.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
    Tematy:
    ordinary differential equations
    Laplace transform
    Riemann-Liouville integral
    równanie różniczkowe zwyczajne
    transformacja Laplace'a
    całka Riemann-Liouville
    Opis:
    Finding the exact solution to dynamical systems in the field of mathematical modeling is extremely important and to achieve this goal, various integral transforms have been developed. In this research analysis, non-integer order ordinary differential equations are analytically solved via the Laplace-Carson integral transform technique, which is a technique that has not been previously employed to test the non-integer order differential systems. Firstly, it has proved that the Laplace-Carson transform for n-times repeated classical integrals can be computed by dividing the Laplace-Carson transform of the underlying function by n-th power of a real number p which later helped us to present a new result for getting the Laplace-Carson transform for d-derivative of a function under the Caputo operator. Some initial value problems based upon Caputo type fractional operator have been precisely solved using the results obtained thereof.
    Źródło:
    Journal of Applied Mathematics and Computational Mechanics; 2020, 19, 1; 57-66
    2299-9965
    Pojawia się w:
    Journal of Applied Mathematics and Computational Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Using Shehu integral transform to solve fractional order Caputo type initial value problems
    Autorzy:
    Qureshi, Sania
    Kumar, Prem
    Powiązania:
    https://bibliotekanauki.pl/articles/122809.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
    Tematy:
    ordinary differential equations
    Laplace transform
    Riemann-Liouville integral
    równanie różniczkowe zwyczajne
    transformata Laplace'a
    całka Riemann-Liouville
    Opis:
    In the present research analysis, linear fractional order ordinary differential equations with some defined condition (s) have been solved under the Caputo differential operator having order α > 0 via the Shehu integral transform technique. In this regard, we have presented the proof of finding the Shehu transform for a classical nth order integral of a piecewise continuous with an exponential nt h order function which leads towards devising a theorem to yield exact analytical solutions of the problems under investigation. Varying fractional types of problems are solved whose exact solutions can be compared with solutions obtained through existing transformation techniques including Laplace and Natural transforms.
    Źródło:
    Journal of Applied Mathematics and Computational Mechanics; 2019, 18, 2; 75-83
    2299-9965
    Pojawia się w:
    Journal of Applied Mathematics and Computational Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laplace-Carson integral transform for exact solutions of non-integer order initial value problems with Caputo operator
    Autorzy:
    Kumar, Prem
    Qureshi, Sania
    Powiązania:
    https://bibliotekanauki.pl/articles/1839810.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
    Tematy:
    ordinary differential equations
    Laplace transform
    Riemann-Liouville integral
    równanie różniczkowe zwyczajne
    transformacja Laplace'a
    całka Riemann-Liouville
    Opis:
    Finding the exact solution to dynamical systems in the field of mathematical modeling is extremely important and to achieve this goal, various integral transforms have been developed. In this research analysis, non-integer order ordinary differential equations are analytically solved via the Laplace-Carson integral transform technique, which is a technique that has not been previously employed to test the non-integer order differential systems. Firstly, it has proved that the Laplace-Carson transform for n-times repeated classical integrals can be computed by dividing the Laplace-Carson transform of the underlying function by n-th power of a real number p which later helped us to present a new result for getting the Laplace-Carson transform for d-derivative of a function under the Caputo operator. Some initial value problems based upon Caputo type fractional operator have been precisely solved using the results obtained thereof.
    Źródło:
    Journal of Applied Mathematics and Computational Mechanics; 2020, 19, 1; 57-66
    2299-9965
    Pojawia się w:
    Journal of Applied Mathematics and Computational Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Boundary integral solution for a class of fourth-order two-point boundary value problems
    Autorzy:
    Al-Gahtani, H. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/122949.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
    Tematy:
    boundary integral method
    fourth-order differential equation
    nonlinear ordinary differential equations
    nieliniowe równania różniczkowe zwyczajne
    równanie różniczkowe czwartego rzędu
    Opis:
    In this paper, a boundary integral method is proposed for the solution of a class of fourth-order two-boundary value problems described by the equation yiv+P(x, y, y’, y’’, y’’’) = 0, x ∈ ( 0,L), where P is a polynomial function of its arguments. The differential equation is cast in an integral form and the weighted residual technique is used to generate the corresponding boundary integral equations. The boundary integral equations are then, solved by expressing the dependent variable, y, in terms of a power series. The proposed method is tested through four examples to show the applicability of the method to solve a wide range of fourth-order differential equations including the nonlinear ones.
    Źródło:
    Journal of Applied Mathematics and Computational Mechanics; 2016, 15, 3; 5-13
    2299-9965
    Pojawia się w:
    Journal of Applied Mathematics and Computational Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Existence and Ulam-Hyers stability of the implicit fractional boundary value problem with ψ-Caputo fractional derivative
    Autorzy:
    Wahash, Hanan A.
    Abdo, Mohammed S
    Panchal, Satish K.
    Powiązania:
    https://bibliotekanauki.pl/articles/122800.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
    Tematy:
    fractional differential equations
    ψ-fractional integral and derivative
    existence and Ulam-Hyers stability
    fixed point theorem
    równania różniczkowe ułamkowe
    równania różniczkowe cząstkowe
    pochodna ułamkowa
    twierdzenie o punkcie stałym
    pochodna ułamkowa Caputo
    Opis:
    In this paper, we investigate the existence, uniqueness and Ulam-Hyers stability of solutions for nonlinear implicit fractional differential equations with boundary conditions involving a ψ-Caputo fractional derivative. The obtained results for the proposed problem are proved under a new approach and minimal assumptions on the function ƒ . The analysis is based upon the reduction of the problem considered to the equivalent integral equation, while some fixed point theorems of Banach and Schauder and generalized Gronwall inequality are employed to obtain our results for the problem at hand. Finally, the investigation is illustrated by providing a suitable example.
    Źródło:
    Journal of Applied Mathematics and Computational Mechanics; 2020, 19, 1; 89-101
    2299-9965
    Pojawia się w:
    Journal of Applied Mathematics and Computational Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Existence and Ulam-Hyers stability of the implicit fractional boundary value problem with ψ-Caputo fractional derivative
    Autorzy:
    Wahash, Hanan A.
    Abdo, Mohammed S
    Panchal, Satish K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1839794.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
    Tematy:
    fractional differential equations
    ψ-fractional integral and derivative
    existence and Ulam-Hyers stability
    fixed point theorem
    równania różniczkowe ułamkowe
    równania różniczkowe cząstkowe
    pochodna ułamkowa
    twierdzenie o punkcie stałym
    pochodna ułamkowa Caputo
    Opis:
    In this paper, we investigate the existence, uniqueness and Ulam-Hyers stability of solutions for nonlinear implicit fractional differential equations with boundary conditions involving a ψ-Caputo fractional derivative. The obtained results for the proposed problem are proved under a new approach and minimal assumptions on the function ƒ. The analysis is based upon the reduction of the problem considered to the equivalent integral equation, while some fixed point theorems of Banach and Schauder and generalized Gronwall inequality are employed to obtain our results for the problem at hand. Finally, the investigation is illustrated by providing a suitable example.
    Źródło:
    Journal of Applied Mathematics and Computational Mechanics; 2020, 19, 1; 89-101
    2299-9965
    Pojawia się w:
    Journal of Applied Mathematics and Computational Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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