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In this work, we study the initial value problem associated with an abstract integrodifferential equation in interpolation scales. We prove local-in-time existence, uniqueness, continuation, and a blow-up alternative for regular mild…

偏微分方程分析 · 数学 2026-02-10 Bruno de Andrade , Marcos Gabriel de Santana

We consider the Cauchy problem for the $L^2$-critical nonlinear Schr\"odinger equation with a fractional dissipation. According to the order of the fractional dissipation, we prove the global existence or the existence of finite time blowup…

偏微分方程分析 · 数学 2016-10-07 Mohamad Darwich , Luc Molinet

In the present paper, we address a class of the fractional derivatives of constant and variable orders for the first time. Fractional-order relaxation equations of constants and variable orders in the sense of Caputo type are modeled from…

经典物理 · 物理学 2017-07-18 Xiao-Jun Yang

In this work, we investigate a variational formulation for a time-fractional Fokker-Planck equation which arises in the study of complex physical systems involving anomalously slow diffusion. The model involves a fractional-order Caputo…

数值分析 · 数学 2020-06-05 Manh Hong Duong , Bangti Jin

This work considers a second order impulsive coupled system of differential equations with generalized jump conditions in half-line, which can depend on the impulses of the unknown functions and their first derivatives. The arguments apply…

经典分析与常微分方程 · 数学 2017-07-03 Feliz Minhós , Robert de Sousa

Nonlinear fractional dynamics with scale invariance in continuous and discrete time approaches are described. We use non-integer-order integro-differential operators that can be interpreted as generalizations of scaling (dilation)…

斑图形成与孤子 · 物理学 2025-09-22 Vasily E. Tarasov

In this present paper, we introduce and study a dynamical systems involving fractional derivative operator and nonlocal condition, which is constituted of a fractional evolution equation and a time-dependent variational inequality, and is…

综合数学 · 数学 2023-10-11 Jinxia Cen , J. Vanterler da C. Sousa , Wei Wu

We study the uncoupled space-time fractional operators involving time-dependent coefficients and formulate the corresponding inverse problems. Our goal is to determine the variable coefficients from the exterior partial measurements of the…

偏微分方程分析 · 数学 2022-08-11 Li Li

The work considers a system of fractional order partial differential equations. The existence and uniqueness theorems for the classical solution of initial-boundary value problems are proved in two cases: 1) the right-hand side of the…

偏微分方程分析 · 数学 2024-03-28 Ravshan Ashurov , Oqila Muhiddinova

For fractional derivatives and time-fractional differential equations, we construct a framework on the basis of the operator theory in fractional Sobolev spaces. Our framework provides a feasible extension of the classical Caputo and the…

偏微分方程分析 · 数学 2022-01-24 Masahiro Yamamoto

We introduce more general concepts of Riemann-Liouville fractional integral and derivative on time scales, of a function with respect to another function. Sufficient conditions for existence and uniqueness of solution to an initial value…

经典分析与常微分方程 · 数学 2018-07-24 Kheira Mekhalfi , Delfim F. M. Torres

We introduce and present the general solution of three two-term fractional differential equations of mixed Caputo/Riemann Liouville type. We then solve a Dirichlet type Sturm-Liouville eigenvalue problem for a fractional differential…

经典分析与常微分方程 · 数学 2017-12-29 Mohammad Dehghan , Angelo B. Mingarelli

The artefact is dedicated towards the inspection of nonlinear fractional differential systems involving Riemann-Liouville derivative with higher order and fixed lower limit, including non-instantaneous impulses for existence and uniqueness…

动力系统 · 数学 2022-07-29 Lavina Sahijwani , N. Sukavanam

We prove a necessary optimality condition of Euler-Lagrange type for fractional variational problems with derivatives of incommensurate variable order. This allows us to state a version of Noether's theorem without transformation of the…

最优化与控制 · 数学 2013-10-14 Tatiana Odzijewicz , Agnieszka B. Malinowska , Delfim F. M. Torres

We study the existence of positive solutions for a parameter-dependent nonlocal boundary value problem involving a Caputo fractional derivative, which generalizes a classic thermostat model. Our approach extends previous work by considering…

综合数学 · 数学 2026-04-16 Gennaro Infante , Takieddine Zeghida

A fractional derivative is a temporally nonlocal operation which is computationally intensive due to inclusion of the accumulated contribution of function values at past times. In order to lessen the computational load while maintaining the…

数值分析 · 数学 2021-11-01 Daegeun Yoon , Donghyun You

We consider initial/boundary value problems for time-fractional parabolic PDE of order $0<\alpha<1$ with Caputo fractional derivative (also called fractional diffusion equations in the literature). We prove well-posedness of corresponding…

数值分析 · 数学 2017-04-12 Michael Karkulik

This paper is devoted to the study of the well-posedness of a singular nonlinear fractional pseudo-hyperbolic system. The fractional derivative is described in Caputo sense. The equations are supplemented by classical and nonlocal boundary…

偏微分方程分析 · 数学 2022-11-23 Said Mesloub , Hassan Eltayeb Gadian , Lotfi Kasmi

It is well known that the Leibniz rule for the integer derivative of order one does not hold for the fractional derivative case when the fractional order lies between 0 and 1. Thus it poses a great difficulty in the calculation of…

综合数学 · 数学 2019-05-16 Bichitra Kumar Lenka

In this paper, we investigate existence and uniqueness of solutions for Darboux type problem for fuzzy fractional order differential equation. We used Caputo-Katogampola fuzzy fractional derivative for proving our results. Schauder's fixed…

综合数学 · 数学 2023-10-12 Nagwa A. Saeed , Deepak B. Pachpatte