Results 21 to 30 of about 210 (124)

On the solvability of equations with a distributed fractional derivative given by the Stieltjes integral [PDF]

open access: yes, 2022
Linear equations in Banach spaces with a distributed fractional derivative given by the Stieltjes integral and with a closed operator A in the right-hand side are ...
Fedorov, V. E.   +3 more
core   +1 more source

Boundary value problem for a system of partial differential equations with the Dzhrbashyan–Nersesyan fractional differentiation operators [PDF]

open access: yes, 2022
A boundary value problem in a rectangular domain for a system of partial differential equations with the Dzhrbashyan-Nersesyan fractional differentiation operators with constant coefficients is studied in the case when the matrix coefficients of the ...
M.O. Mamchuev
core   +2 more sources

ОБ ОДНОЙ ОБРАТНОЙ ЗАДАЧЕ ТИПА БИЦАДЗЕ-САМАРСКОГО ДЛЯ ПАРАБОЛИЧЕСКОГО УРАВНЕНИЯ ДРОБНОГО ПОРЯДКА [PDF]

open access: yes, 2023
In this paper, we study a nonlocal inverse problem of the Bitsadze-Samarskii type for a degenerate parabolic equation of fractional order with the Gerasimov-Caputo operator. The spectral method is used to solve the problem. Using this method, the problem
Кадиркулов , Бахтиёр   +1 more
core   +2 more sources

STUDY OF THE SINGULAR POINTS OF THE FRACTIONAL OSCILLATOR VAN DER POL-DUFFING [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2019
A study is conducted on the asymptotic stability of the rest points of the fractional oscillator Van der Pol-Duffing. The fractional van der Pol-Duffing oscillator is an oscillatory system of two differential equations with fractional order derivatives ...
Е. R. Novikova
doaj   +1 more source

Задача Дирихле для обобщенного уравнения Лаврентьева-Бицадзе с дробной производной Герасимова-Капуто [PDF]

open access: yes, 2020
Исследована задача Дирихле для дифференциального уравнения в частных производных второго порядка с дробной производной по временной переменной в прямоугольной области. В случае если порядок дробного дифференцирования равен двум, рассматриваемое уравнение
Масаева, О. Х.
core   +1 more source

Integro-differential equations with bounded operators in Banach spaces [PDF]

open access: yes, 2022
The paper investigates integro-differential equations in Banach spaces with operators, which are a composition of convolution and differentiation operators.
A.D. Godova, B.T. Kien, V.E. Fedorov
core   +2 more sources

Ordinary Differential Equation with Left and Right Fractional Derivatives and Modeling of Oscillatory Systems

open access: yesMathematics, 2020
We consider the principle of least action in the context of fractional calculus. Namely, we derive the fractional Euler–Lagrange equation and the general equation of motion with the composition of the left and right fractional derivatives defined on ...
Liana Eneeva   +2 more
doaj   +1 more source

Application of the Fractional Riccati Equation for Mathematical Modeling of Dynamic Processes with Saturation and Memory Effect

open access: yesFractal and Fractional, 2022
In this study, the model Riccati equation with variable coefficients as functions, as well as a derivative of a fractional variable order (VO) of the Gerasimov-Caputo type, is used to approximate the data for some physical processes with saturation.
Dmitriy Tverdyi, Roman Parovik
doaj   +1 more source

About one differential model of dynamics of groundwater [PDF]

open access: yes, 2023
When modeling the flow of groundwater and streams together, two different approaches are used, using hydraulic and hydrological models as channel flow models. The former is based on mathematical equations of water movement in open channels.
Abdullayev A. A.   +2 more
core   +1 more source

Parallelization of a Numerical Algorithm for Solving the Cauchy Problem for a Nonlinear Differential Equation of Fractional Variable Order Using OpenMP Technology

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2023
The article presents a software implementation of a parallel efficient and fast computational algorithm for solving the Cauchy problem for a nonlinear differential equation of a fractional variable order.
Tverdyi, D.A.   +3 more
doaj   +1 more source

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