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In this work, for an equation of high even order with a fractional derivative in the sense of Caputo, a problem is studied in a rectangular domain with conjugation conditions. A criterion for the uniqueness of a solution is given. The…

偏微分方程分析 · 数学 2021-06-09 B. Yu. Irgashev

In the present work, we investigate a uniqueness of solution of the inverse source problem with non-local conditions for mixed parabolic-hyperbolic type equation with Caputo fractional derivative. Solution of the problem we represent as…

偏微分方程分析 · 数学 2016-01-22 M. S. Salakhitdinov , E. T. Karimov

In this work we investigate a boundary problem with non-local conditions for mixed parabolic-hyperbolic type equation with three lines of type-changing with Caputo fractional derivative in the parabolic part. We equivalently reduce…

偏微分方程分析 · 数学 2015-07-07 E. T. Karimov , A. S. Berdyshev , N. A. Rakhmatullaeva

In the article, in a rectangular domain, by the Fourier method, the initial boundary value problem for a high-order equation with two lines of degeneracy with a fractional derivative in the sense of Caputo is investigated for uniqueness and…

偏微分方程分析 · 数学 2023-04-27 B. Yu. Irgashev

This work is dedicated to the study of a mixed-type partial differential equation involving a Caputo fractional derivative in the time domain $t > 0$ and a classical parabolic equation in the domain $t < 0$, along with Dezin-type non-local…

偏微分方程分析 · 数学 2025-07-17 Ravshan Ashurov , Umida Dusanova , Navbahor Nuraliyeva

In the present paper, we discuss solvability questions of a non-local problem with integral form transmitting conditions for diffusion-wave equation with the Caputo fractional derivative in a domain bounded by smooth curves. The uniqueness…

偏微分方程分析 · 数学 2015-07-07 P. Agarwal , A. S. Berdyshev , E. T. Karimov

This paper investigates a nonlocal boundary value problem for a multi-parametric integral-differential equation involving the Caputo-Prabhakar type operator in a bounded rectangular domain. The nonlocal conditions are given as partial…

偏微分方程分析 · 数学 2026-05-26 Erkinjon Karimov , Doniyor Usmonov , Khurshidjon Turdiev

The mixed problem for a degenerate high order equation with a fractional derivative in a rectangular domain is considered in the article. The existence of a solution and its uniqueness are shown by the spectral method.

偏微分方程分析 · 数学 2020-07-31 B. Yu. Irgashev

In this paper, we investigate the existence and uniqueness of solutions for a fractional boundary value problem supplemented with nonlocal Riemann-Liouville fractional integral and Caputo fractional derivative boundary conditions. Our…

经典分析与常微分方程 · 数学 2018-05-17 Faouzi Haddouchi

We obtain necessary optimality conditions for variational problems with a Lagrangian depending on a Caputo fractional derivative, a fractional and an indefinite integral. Main results give fractional Euler-Lagrange type equations and…

最优化与控制 · 数学 2011-11-11 Ricardo Almeida , Shakoor Pooseh , Delfim F. M. Torres

We study two generalizations of fractional variational problems by considering higher-order derivatives and a state time delay. We prove a higher-order integration by parts formula involving a Caputo fractional derivative of variable order…

最优化与控制 · 数学 2018-04-20 Dina Tavares , Ricardo Almeida , Delfim F. M. Torres

We prove existence of solutions for a nonlinear fractional oscillator equation with both left Riemann-Liouville and right Caputo fractional derivatives subject to natural boundary conditions. The proof is based on a transformation of the…

经典分析与常微分方程 · 数学 2017-06-12 Assia Guezane-Lakoud , Rabah Khaldi , Delfim F. M. Torres

This paper presents some sufficient conditions for the existence of solutions of fractional differential equation with nonlocal multi-point boundary conditions involving Caputo fractional derivative and integral boundary conditions. Our…

经典分析与常微分方程 · 数学 2018-11-28 Faouzi Haddouchi

The article proposes a Caputo fractional conjugate gradient (CFCG) method for unconstrained optimization problems which is applicable to smooth as well as non-smooth problmes. The proposed method uses a non-adaptive version of the Caputo…

最优化与控制 · 数学 2025-12-22 Barsha Shawa , Md Abu Talhamainuddin Ansary

The study of fractional variational problems in terms of a combined fractional Caputo derivative is introduced. Necessary optimality conditions of Euler-Lagrange type for the basic, isoperimetric, and Lagrange variational problems are…

最优化与控制 · 数学 2011-12-16 Agnieszka B. Malinowska , Delfim F. M. Torres

In this work, we consider an initial problem for second order partial differential equations with Caputo fractional derivatives in the time-variable and Bessel operator in the space-variable. For non-local boundary conditions, we present a…

偏微分方程分析 · 数学 2021-01-05 Erkinjon Karimov , Murat Mamchuev , Michael Ruzhansky

We study fractional variational problems of Herglotz type of variable order. Necessary optimality conditions, described by fractional differential equations depending on a combined Caputo fractional derivative of variable order, are proved.…

最优化与控制 · 数学 2017-10-12 Dina Tavares , Ricardo Almeida , Delfim F. M. Torres

We review some recent results of the fractional variational calculus. Necessary optimality conditions of Euler-Lagrange type for functionals with a Lagrangian containing left and right Caputo derivatives are given. Several problems are…

最优化与控制 · 数学 2011-11-29 Ricardo Almeida , Agnieszka B. Malinowska , Delfim F. M. Torres

We establish necessary optimality conditions for variational problems with a Lagrangian depending on a combined Caputo derivative of variable fractional order. The endpoint of the integral is free, and thus transversality conditions are…

最优化与控制 · 数学 2015-03-30 Dina Tavares , Ricardo Almeida , Delfim F. M. Torres

In this paper we study linear and nonlinear fractional differential equations involving the Caputo fractional derivative with Mittag-Leffler non-singular kernel of order $0<\alpha<1.$ We first obtain a new estimate of the fractional…

经典分析与常微分方程 · 数学 2017-10-11 Mohammed Al-Refai
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