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The existing fractional grey prediction models mainly use discrete fractional-order difference and accumulation, but in the actual modeling, continuous fractional-order calculus has been proved to have many excellent properties, such as…

综合数学 · 数学 2020-10-28 Wanli Xie , Caixia Liu , Weidong Li , Wenze Wu , Chong Liu

In this work, we consider a time-fractional Allen-Cahn equation, where the conventional first order time derivative is replaced by a Caputo fractional derivative with order $\alpha\in(0,1)$. First, the well-posedness and (limited) smoothing…

数值分析 · 数学 2019-06-18 Qiang Du , Jiang Yang , Zhi Zhou

In this paper, we consider the backward problem for fractional in time evolution equations $\partial_t^\alpha u(t)= A u(t)$ with the Caputo derivative of order $0<\alpha \le 1$, where $A$ is a self-adjoint and bounded above operator on a…

偏微分方程分析 · 数学 2022-11-30 S. E. Chorfi , L. Maniar , M. Yamamoto

This paper is concerned with the fractional evolution equation with a discrete distribution of Caputo time-derivatives such that the largest and the smallest orders, $\alpha$ and $\alpha_m$, satisfy the conditions $1<\alpha\le 2$ and…

偏微分方程分析 · 数学 2018-01-11 Emilia Bazhlekova , Ivan Bazhlekov

We consider the terminal value problem (or called final value problem, initial inverse problem, backward in time problem) of determining the initial value, in a general class of time-fractional wave equations with Caputo derivative, from a…

偏微分方程分析 · 数学 2019-10-15 Nguyen Huy Tuan , Tomás Caraballo , Tran Bao Ngoc , Yong Zhou

In this paper, we design a semi-implicit scheme for the scalar time fractional reaction-diffusion equation. We theoretically prove that the numerical scheme is stable without the restriction on the ratio of the time and space stepsizes, and…

数值分析 · 数学 2014-01-30 Yanyan Yu , Weihua Deng , Yujiang Wu

The aim of this tutorial survey is to revisit the basic theory of relaxation processes governed by linear differential equations of fractional order. The fractional derivatives are intended both in the Rieamann-Liouville sense and in the…

数学物理 · 物理学 2008-05-18 Francesco Mainardi , Rudolf Gorenflo

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

This paper is devoted to the analysis of the problem of stabilization of fractional (in time) partial differential equations. We consider the following equation $$ \partial^{\alpha,\eta}_{t} u(t)=\mathcal{A}u(t)-\frac{\eta}{\Gamma…

偏微分方程分析 · 数学 2019-02-08 Kaïs Ammari , Fathi Hassine , Luc Robbiano

We start with a general governing equation for diffusion transport, written in a conserved form, in which the phenomenological flux laws can be constructed in a number of alternative ways. We pay particular attention to flux laws that can…

偏微分方程分析 · 数学 2019-02-22 Tokinaga Namba , Piotr Rybka , Vaughan Voller

An adaptive finite difference scheme for variable-order fractional-time subdiffusion equations in the Caputo form is studied. The fractional time derivative is discretized by the L1 procedure but using nonhomogeneous timesteps. The size of…

数值分析 · 数学 2024-09-20 Joaquín Quintana-Murillo , Santos Bravo Yuste

We consider a discretization of Caputo derivatives resulted from deconvolving a scheme for the corresponding Volterra integral. Properties of this discretization, including signs of the coefficients, comparison principles, and stability of…

数值分析 · 数学 2019-08-19 Lei Li , Jian-Guo Liu

We analyze, from the viewpoint of positivity preservation, certain discretizations of a fundamental partial differential equation, the one-dimensional advection equation with periodic boundary condition. The full discretization is obtained…

数值分析 · 数学 2021-05-18 Yiannis Hadjimichael , David I. Ketcheson , Lajos Lóczi

In this work I consider the abstract Cauchy problems with Caputo fractional time derivative of order $\alpha\in(0,1]$, and discuss the continuity of the respective solutions regarding the parameter $\alpha$. I also present a study about the…

偏微分方程分析 · 数学 2021-07-28 Paulo M. Carvalho-Neto

In this paper, we study the stability of solution of initial value problem for fractional differential equation involving generalized Katugampola derivative. Pachpatte inequality is used as handy tool to obtain our result.

经典分析与常微分方程 · 数学 2018-08-10 Sandeep P Bhairat

The Cauchy problem for fractional derivatives linear systems of ordinary differential equations with constant coefficients is considered, where at first the analytic expressions are given through the matrix exponent of its corresponding…

动力系统 · 数学 2018-05-18 Fikret A. Aliev , N. A. Aliev , N. A. Safarova , K. G. Kasimova , N. I Velieva

In this paper, we consider the extended stochastic Navier-Stokes equations with Caputo derivative driven by fractional Brownian motion. We firstly derive the pathwise spatial and temporal regularity of the generalized Ornstein-Uhlenbeck…

数值分析 · 数学 2017-09-18 Guang-an Zou , Guangying Lv , Jiang-Lun Wu

We show that the anomalous diffusion equations with a fractional derivative in the Caputo or Riesz sense are strictly related to the special convolution properties of the L\'evy stable distributions which stem from the evolution properties…

统计力学 · 物理学 2017-03-03 K. Górska , A. Horzela , K. A. Penson , G. Dattoli , G. H. E. Duchamp

In this paper, we study existence results for initial value problems for hybrid fractional integro-differential equations. Our investigation is based on the Dhage hybrid fixed point theorem. Some fundamental fractional differential…

泛函分析 · 数学 2020-09-29 Sh. M Al-Issa

This work considers to numerically solve a subdiffusion equation involving constant time delay $\tau$ and Riemann-Liouville fractional derivative. First, a fully discrete finite element scheme is developed for the considered problem under…

数值分析 · 数学 2025-09-17 Weiping Bu , Chen Nie , Weizhi Liao