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We formulate fractional difference equations of Riemann-Liouville and Caputo type in a functional analytical framework. Main results are existence of solutions on Hilbert space-valued weighted sequence spaces and a condition for stability…

In this paper, we discuss the uniqueness for solution to time-fractional diffusion equation $\partial_t^\alpha (u-u_0) + Au=0$ with the homogeneous Dirichlet boundary condition, where an elliptic operator $-A$ is not necessarily symmetric.…

Analysis of PDEs · Mathematics 2021-03-03 Daijun Jiang , Zhiyuan Li , Matthieu Pauron , Masahiro Yamamoto

We prove existence and uniqueness of a solution to the Cauchy problem corresponding to the equation \begin{equation*} \begin{cases} \partial_t u_{\varepsilon,\delta} +\mathrm{div} {\mathfrak f}_{\varepsilon,\delta}({\bf x},…

Analysis of PDEs · Mathematics 2024-09-02 Melanie Graf , Michael Kunzinger , Darko Mitrovic , Djordjie Vujadinovic

There are several approaches to the fractional differential operator. Generalized q-fractional difference operator was defined in the aid of q-iterated Cauchy integral and q-calculus techniques. We introduce Caputo type derivative related…

General Mathematics · Mathematics 2020-01-30 M. Momenzadeh , S. Norouzpoor

This paper investigates abstract integro-differential hyperbolic equations, focusing on the probabilistic representation of their solutions. Our analysis is based on fractional derivatives and non-local operators, which are powerful tools…

Probability · Mathematics 2025-11-04 Alessandro De Gregorio , Roberto Garra

We consider a class of numerical approximations to the Caputo fractional derivative. Our assumptions permit the use of nonuniform time steps, such as is appropriate for accurately resolving the behavior of a solution whose derivatives are…

Numerical Analysis · Mathematics 2020-12-23 Hong-lin Liao , William McLean , Jiwei Zhang

We consider the decay of solution to fractional diffusion equation with the distributed order Caputo derivative. We assume that the elliptic operator is time-dependent and that the weight function contained in the definition of the…

Analysis of PDEs · Mathematics 2018-06-12 Adam Kubica , Katarzyna Ryszewska

The cable model is widely used in several fields of science to describe the propagation of signals. A relevant medical and biological example is the anomalous subdiffusion in spiny neuronal dendrites observed in several studies of the last…

Biological Physics · Physics 2017-06-28 Silvia Vitali , Francesco Mainardi

Two Stefan's problems for the diffusion fractional equation are solved, where the fractional derivative of order $ \al \in (0,1) $ is taken in the Caputo's sense. The first one has a constant condition on $ x = 0 $ and the second presents a…

Analysis of PDEs · Mathematics 2013-09-17 Sabrina Roscani , Eduardo A. Santillan Marcus

The L-fractional derivative is defined as a certain normalization of the well-known Caputo derivative, so alternative properties hold: smoothness and finite slope at the origin for the solution, velocity units for the vector field, and a…

Classical Analysis and ODEs · Mathematics 2024-07-16 Marc Jornet

Two fractional two-phase Stefan-like problems are considered by using Riemann-Liouville and Caputo derivatives of order $\alpha \in (0, 1)$ verifying that they coincide with the same classical Stefan problem at the limit case when…

Analysis of PDEs · Mathematics 2020-07-15 Sabrina Roscani , Nahuel Caruso , Domingo Tarzia

In this paper, we study the Cauchy problem of the fractional wave equation with time-dependent damping and the source nonlinearity $f(u)\approx |u|^p$: $$ \begin{cases} \partial_t^2u(t,x)+(-\Delta)^{\sigma/2} u(t,x)+b(t) \partial_t u(t,x)…

Analysis of PDEs · Mathematics 2024-09-04 Jiayun Lin , Masahiro Ikeda

In this note, we prove or re-prove several important results regarding one dimensional time fractional ODEs following our previous work \cite{fllx17}. Here we use the definition of Caputo derivative proposed in \cite{liliu17frac1,liliu2017}…

Classical Analysis and ODEs · Mathematics 2018-04-03 Yuanyuan Feng , Lei Li , Jian-Guo Liu , Xiaoqian Xu

In the present paper, we study the Cauchy-Dirichlet problem to the nonlocal nonlinear diffusion equation with polynomial nonlinearities $$\mathcal{D}_{0|t}^{\alpha…

Analysis of PDEs · Mathematics 2022-11-28 Meiirkhan B. Borikhanov , Michael Ruzhansky , Berikbol T. Torebek

In recent years, the Boussinesq type fractional partial differential equation has attracted much attentions of researchers for its practical importance. In this paper we study a non-local problem for the Boussinesq type equation $D_t^\alpha…

Analysis of PDEs · Mathematics 2024-04-18 Ravshan Ashurov , Yusuf Fayziev , Muattar Khudoykulova

This manuscript investigates the existence and uniqueness of solutions to the first order fractional anti-periodic boundary value problem involving Caputo-Katugampola (CK) derivative. A variety of tools for analysis this paper through the…

General Mathematics · Mathematics 2019-11-21 Saleh S. Redhwan , Sadikali L. Shaikh , Mohammed S. Abdo

This paper deals with the following Cauchy problem to nonlinear time fractional non-autonomous integro-differential evolution equation of mixed type via measure of noncompactness $$ \left\{\begin{array}{ll} ^CD^{\alpha}_tu(t)+A(t)u(t)=…

Functional Analysis · Mathematics 2019-02-28 Pengyu Chen , Xuping Zhang , Yongxiang Li

The Cauchy-type problem for a nonlinear differential equation involving Hilfer fractional derivative is considered. We prove existence, uniqueness and continuous dependence of a solution for Cauchy-type problem using successive…

Classical Analysis and ODEs · Mathematics 2017-04-10 D. B. Dhaigude , Sandeep P. Bhairat

We study a space-fractional diffusion problem, where the non-local diffusion flux involves the Caputo derivative of the diffusing quantity. We prove the unique existence of regular solutions to this problem by means of the semigroup theory.…

Analysis of PDEs · Mathematics 2019-09-19 Katarzyna Ryszewska

The inverse problem of determining the right-hand side of the subdiffusion equation with the fractional Caputo derivative is considered. The right-hand side of the equation has the form $f(x)g(t)$ and the unknown is function $f(x)$. The…

Analysis of PDEs · Mathematics 2023-02-28 Ravshan Ashurov , Shakarova Marjona
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