Results 11 to 20 of about 54 (52)

An analogue of the Lyapunov inequality for an ordinary second-order differential equation with a fractional derivative and a variable coefficient

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2022
This paper studies an ordinary second-order differential equation with a fractional differentiation operator in the sense of Riemann-Liouville with a variable coefficient.
B.I. Efendiev
doaj   +1 more source

On Strongly Continuous Resolving Families of Operators for Fractional Distributed Order Equations

open access: yesFractal and Fractional, 2021
The aim of this work is to find by the methods of the Laplace transform the conditions for the existence of a strongly continuous resolving family of operators for a linear homogeneous equation in a Banach space with the distributed Gerasimov–Caputo ...
Vladimir E. Fedorov, Nikolay V. Filin
doaj   +1 more source

Quasilinear Fractional Order Equations and Fractional Powers of Sectorial Operators

open access: yesFractal and Fractional, 2023
The fractional powers of generators for analytic operator semigroups are used for the proof of the existence and uniqueness of a solution of the Cauchy problem to a first order semilinear equation in a Banach space. Here, we use an analogous construction
Vladimir E. Fedorov   +2 more
doaj   +1 more source

Degenerate Multi-Term Equations with Gerasimov–Caputo Derivatives in the Sectorial Case

open access: yesMathematics, 2022
The unique solvability for the Cauchy problem in a class of degenerate multi-term linear equations with Gerasimov–Caputo derivatives in a Banach space is investigated.
Vladimir E. Fedorov, Kseniya V. Boyko
doaj   +1 more source

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

Нелокальная краевая задача для уравнения с производными дробного порядка с различными началами

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2023
Рассматривается линейное обыкновенное дифференциальное уравнение дробного порядка с композицией лево- и правосторонних операторов дробных производных в главной части.
Энеева, Л.М.
doaj   +1 more source

Recent applications of fractional calculus to science and engineering

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 54, Page 3413-3442, 2003., 2003
This paper deals with recent applications of fractional calculus to dynamical systems in control theory, electrical circuits with fractance, generalized voltage divider, viscoelasticity, fractional‐order multipoles in electromagnetism, electrochemistry, tracer in fluid flows, and model of neurons in biology.
Lokenath Debnath
wiley   +1 more source

A Class of Fractional Degenerate Evolution Equations with Delay

open access: yesMathematics, 2020
We establish a class of degenerate fractional differential equations involving delay arguments in Banach spaces. The system endowed by a given background and the generalized Showalter–Sidorov conditions which are natural for degenerate type equations. We
Amar Debbouche, Vladimir E. Fedorov
doaj   +1 more source

Дробно-дифференциальная модель физических процессов с насыщением и ее применение к описанию динамики COVID-19

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2022
В этой статье была использована дробно-дифференциальная модель физических процессов с насыщением для описания динамики летальных исходов инфекции COVID-19.
Твёрдый, Д.А.   +1 more
doaj   +1 more source

Inverse Problem for Evolutionary Equation with the Gerasimov – Caputo Fractional Derivative in the Sectorial Case

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2019
We investigates the unique solvability of a class of linear inverse problems with a time-independent unknown coefficient in an evolution equation in Banach space, which is resolved with respect to the fractional Gerasimov – Caputo derivative.
V.E. Fedorov, A. V. Nagumanova
doaj   +1 more source

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