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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…

Optimization and Control · Mathematics 2015-03-30 Dina Tavares , Ricardo Almeida , Delfim F. M. Torres

We prove new estimates of the Caputo derivative of order $\alpha \in (0,1]$ for some specific functions. The estimations are shown useful to construct Lyapunov functions for systems of fractional differential equations in biology, based on…

Optimization and Control · Mathematics 2020-08-26 Adnane Boukhouima , Khalid Hattaf , El Mehdi Lotfi , Marouane Mahrouf , Delfim F. M. Torres , Noura Yousfi

We continue the study of a non self-adjoint fractional three-term Sturm-Liouville boundary value problem (with a potential term) formed by the composition of a left Caputo and left-Riemann-Liouville fractional integral under {\it Dirichlet…

Classical Analysis and ODEs · Mathematics 2022-08-31 Mohammad Dehghan , Angelo B. Mingarelli

An improvement of a {\em Global (strong) Gagliardo-Nienberg inequality with a BMO term} is established by replacing local derivatives by {\em and fractional Laplacians.} Local versions are also given.

Analysis of PDEs · Mathematics 2026-05-04 Dung Le

In this paper, a fractional derivative with short-term memory properties is defined, which can be viewed as an extension of Caputo fractional derivative. Then, some properties of the short memory fractional derivative are discussed. Also, a…

Dynamical Systems · Mathematics 2020-07-14 Xudong Hai , Guojian Ren , Yongguang Yu , Lipo Mo , Conghui Xu

In the present paper, we solve three boundary value problems related to the temperature field in oil strata -- the fractional extensions of the incomplete lumped formulation and lumped formulation in the linear case and the fractional…

Analysis of PDEs · Mathematics 2007-07-16 Mridula Garg , Alka Rao

We consider the time-fractional Cattaneo equation involving the tempered Caputo space-fractional derivative. We find the characteristic function of the related process and we explain the main differences with previous stochastic treatments…

Probability · Mathematics 2022-06-13 Luisa Beghin , Roberto Garra , Francesco Mainardi , Gianni Pagnini

In the present paper we consider an inverse source problem for time-fractional mixed parabolic-hyperbolic equation with the Caputo derivative. In case, when hyperbolic part of the considered mixed type equation is wave equation, the…

Analysis of PDEs · Mathematics 2015-12-08 Pengbin Feng , E. T. Karimov

In this paper, we deal with analysis of the initial-boundary value problems for the semilinear time-fractional diffusion equations, while the case of the linear equations was considered in the first part of the present work. These equations…

Analysis of PDEs · Mathematics 2024-11-11 Yuri Luchko , Masahiro Yamamoto

In this paper, we consider a class of the Caputo fractional stochastic differential equations of fractional order $\alpha \in (\frac{1}{2},1]$. Our aim is to analyze of the continuous dependence of solutions on the fractional order…

Probability · Mathematics 2025-06-04 T. C. Son , N. T. Dung , P. T. P Thuy , T. M. Cuong , H. T. P. Thao , P. D. Tung

In the paper, a linear differential equation with variable coefficients and a Caputo fractional derivative is considered. For this equation, a Cauchy problem is studied, when an initial condition is given at an intermediate point that does…

Optimization and Control · Mathematics 2020-09-01 Mikhail Gomoyunov

In this paper, we give a positive answer to a problem posed by Nakagawa, Sakamoto and Yamamoto concerning a nonlinear equation with a fractional derivative.

Analysis of PDEs · Mathematics 2012-07-06 Dorsaf Hnaien , Ferdaous Kellil , Rafika Lassoued

Taylor series is a useful mathematical tool when describing and constructing a function. With the series representation, some properties of fractional calculus can be revealed clearly. This paper investigates two typical applications:…

General Mathematics · Mathematics 2020-02-18 Yiheng Wei , Da-Yan Liu , Peter W. Tse , Yong Wang

We first prove the equivalence of two definitions of Riemann-Liouville fractional integral on time scales, then by the concept of fractional derivative of Riemann-Liouville on time scales, we introduce fractional Sobolev spaces,…

Classical Analysis and ODEs · Mathematics 2022-05-27 Xing Hu , Yongkun Li

In this paper we prove exponential inequalities (also called Bernstein's inequality) for fractional martingales. As an immediate corollary, we will discuss weak law of large numbers for fractional martingales under divergence assumption on…

Probability · Mathematics 2012-04-20 Bruno Saussereau

In this article we obtain two-sided estimates for the Greens function of fractional boundary value problems on $\mathbb R_+ \times \mathbb R_+ \times \mathbb R^d$ of the form \[(-{}_{t_1}D^\beta_{0+*} - {}_{t_2}D^\gamma_{0+*})u(t_1, t_2, x)…

Probability · Mathematics 2019-09-04 Ifan Johnston , Vassili Kolokoltsov

We propose a new fractional derivative, the Hilfer-Katugampola fractional derivative. Motivated by the Hilfer derivative this formulation interpolates the well-known fractional derivatives of Hilfer, Hilfer-Hadamard, Riemann-Liouville,…

Classical Analysis and ODEs · Mathematics 2017-11-13 D. S. Oliveira , E. Capelas de Oliveira

In the paper, the initial-boundary value problems to a semilinear integro-differential equation with multi-term fractional Caputo derivatives are analyzed. A particular case of this equation models oxygen diffusion through capillaries.…

Analysis of PDEs · Mathematics 2024-03-05 Nataliya Vasylyeva

In this paper we investigate existence of solutions for the system: \begin{equation*} \left\{ \begin{array}{l} D^{\alpha}_tu=\textrm{div}(u \nabla p),\\ D^{\alpha}_tp=-(-\Delta)^{s}p+u^{2}, \end{array} \right. \end{equation*} in…

Analysis of PDEs · Mathematics 2021-06-24 Esther S. Daus , Maria Pia Gualdani , Jingjing Xu , Nicola Zamponi , Xinyu Zhang

In this article, we study the connection between the fractional Moser-Trudinger inequality and the fractional $\left(\frac{kp}{p-1},p\right)$-Poincar\'e type inequality for any Euclidean domain and discuss the sharpness of this inequality…

Functional Analysis · Mathematics 2022-11-22 Firoj Sk
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