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We present a new proof of the caloric smoothing related to the fractional Gauss-Weierstrass semi-group in Triebel-Lizorkin spaces. This property will be used to prove existence and uniqueness of mild and strong solutions of the Cauchy…

偏微分方程分析 · 数学 2024-02-12 Franka Baaske , Hans-Jürgen Schmeißer , Hans Triebel

In the literature, one can find numerous modifications of Fourier's law from which the first one is called Maxwell-Cattaneo-Vernotte heat equation. Although this model has been known for decades and successfully used to model…

应用物理 · 物理学 2023-08-21 A. J. A. Ramos , A. D. S. Campelo , M. M. Freitas , R. Kovács

We study a model that intermediates among the wave, heat, and transport equations. The approach considers the propagation of initial disturbances in a one-dimensional medium that can vibrate. The medium is nonlinear in such a form that…

数学物理 · 物理学 2019-05-15 Fernando Olivar-Romero , Oscar Rosas-Ortiz

Fractional derivatives can be used to model time delays in a diffusion process. When the order of the fractional derivative is distributed over the unit interval, it is useful for modeling a mixture of delay sources. In some special cases…

偏微分方程分析 · 数学 2016-11-29 Jebessa B. Mijena , Erkan Nane

We describe a general operational method that can be used in the analysis of fractional initial and boundary value problems with additional analytic conditions. As an example, we derive analytic solutions of some fractional generalisation…

偏微分方程分析 · 数学 2013-04-04 Roberto Garra , Federico Polito

Determining the unknown order of the fractional derivative in differential equations simulating various processes is an important task of modern applied mathematics. In the last decade, this problem has been actively studied by specialists.…

偏微分方程分析 · 数学 2024-12-02 Shavkat Alimov , Ravshan Ashurov

In this paper, we study the flux identification problem for a nonlinear time-fractional viscoelastic equation with a general source function based on the boundary measurements. We prove that the direct problem is well-posed, i.e., the…

偏微分方程分析 · 数学 2024-07-24 Mohamed BenSalah , Salih Tatar , Suleyman Ulusoy , Masahiro Yamamoto

We present a theoretical and computational framework based on fractional calculus for the analysis of the nonlocal static response of cylindrical shell panels. The differ-integral nature of fractional derivatives allows an efficient and…

计算工程、金融与科学 · 计算机科学 2022-06-29 Sai Sidhardh , Sansit Patnaik , Fabio Semperlotti

We introduce an efficient variational hybrid quantum-classical algorithm designed for solving Caputo time-fractional partial differential equations. Our method employs an iterable cost function incorporating a linear combination of overlap…

This paper investigates quenching solutions of an one-dimensional, two-sided Riemann-Liouville fractional order convection-diffusion problem. Fractional order spatial derivatives are discretized using weighted averaging approximations in…

偏微分方程分析 · 数学 2025-03-06 Rumin Dong , Lin Zhu , Qin Sheng , Bingxin Zhao

A nonlinear algebraic equation system of two variables is numerically solved, which is derived from a nonlinear algebraic equation system of four variables, that corresponds to a mathematical model related to investment under conditions of…

数值分析 · 数学 2024-07-26 A. Torres-Hernandez , F. Brambila-Paz , J. J. Brambila

In this paper, a new fractional operator of variable order with the use of the monotonic increasing function is proposed in sense of Caputo type. The properties in term of the Laplace and Fourier transforms are analyzed and the results for…

统计力学 · 物理学 2017-07-18 Xiao-Jun Yang , J. A. Tenreiro Machado

Response calculations in density functional theory aim at computing the change in ground-state density induced by an external perturbation. At finite temperature these are usually performed by computing variations of orbitals, which involve…

数值分析 · 数学 2023-04-04 Eric Cancès , Michael F. Herbst , Gaspard Kemlin , Antoine Levitt , Benjamin Stamm

We review some fractional free boundary problems that were recently considered for modeling anomalous phase-transitions. All problems are of Stefan type and involve fractional derivatives in time according to Caputo's definition. We survey…

偏微分方程分析 · 数学 2020-02-18 Andrea N. Ceretani

In this paper, a nonlinear system of fractional ordinary differential equations with multiple scales in time is investigated. We are interested in the effective long-term computation of the solution. The main challenge is how to obtain the…

数值分析 · 数学 2022-01-07 Zhaoyang Wang , Ping Lin

In this note we prove some new results about the application of Wright functions of the first kind to solve fractional differential equations with variable coefficients. Then, we consider some applications of these results in order to…

经典分析与常微分方程 · 数学 2021-06-14 R. Garra , F. Mainardi

One of the most popular methods of controlling dynamical systems is feedback. It can be used without acquiring detailed knowledge of the underlying system. In this work, we study the stability of fractional-order linear difference equations…

动力系统 · 数学 2023-04-26 Divya D. Joshi , Sachin Bhalekar , Prashant M. Gade

In this note we analyze a model for a unidirectional unsteady flow of a viscous incompressible fluid with time dependent viscosity. A possible way to take into account such behaviour is to introduce a memory formalism, including thus the…

偏微分方程分析 · 数学 2013-04-04 Roberto Garra , Federico Polito

Integro-partial differential equations occur in many contexts in mathematical physics. Typical examples include time-dependent diffusion equations containing a parameter (e.g., the temperature) that depends on integrals of the unknown…

偏微分方程分析 · 数学 2007-05-23 Peter A. Becker

Anomalous transport in a tilted periodic potential is investigated numerically within the framework of the fractional Fokker-Planck dynamics via the underlying CTRW. An efficient numerical algorithm is developed which is applicable for an…

统计力学 · 物理学 2009-11-11 E. Heinsalu , M. Patriarca , I. Goychuk , G. Schmid , P. Hänggi