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This paper is concerned with a strongly degenerate convection-diffusion equation in one space dimension whose convective flux involves a non-linear function of the total mass to one side of the given position. This equation can be…

数值分析 · 数学 2010-07-12 Fernando Betancourt , Raimund Bürger , Kenneth H. Karlsen

In this short note we consider a nonlinear and spatially nonlocal PDE modelling moisture evolution in a porous medium. We then show that it naturally arises as a description of superdiffusive jump phenomenon occurring in the medium. We…

流体动力学 · 物理学 2019-04-23 Łukasz Płociniczak

In this paper, we propose a new mathematical model nonlinear reaction-diffusion PDE's describing the dynamics of propagation of cancer. Here the mixed problem for the proposed PDE's is investigated and by applying obtained results…

偏微分方程分析 · 数学 2022-01-10 Kamal N. Soltanov

In this article we study a transport-diffusion equation in the framework of the stratified Lie groups. For this equation we will study the existence of the solutions, a maximum principle, a positivity principle and H\"older regularity.

偏微分方程分析 · 数学 2013-07-04 Diego Chamorro

In this paper, we study the mixed problem for new class of nonlinear reaction-diffusion PDEs with the nonlocal nonlinearity with variable exponents. Here we obtain results on solvability and behavior of solutions both when these are yet…

偏微分方程分析 · 数学 2021-10-18 Kamal N. Soltanov

The purpose of this paper is to study some properties of solutions to one dimensional as well as multidimensional stochastic differential equations (SDEs in short) with super-linear growth conditions on the coefficients. Taking inspiration…

概率论 · 数学 2015-02-18 Khaled Bahlali , Antoine Hakassou , Youssef Ouknine

We consider a non-linear parabolic partial differential equation (PDE) on $\mathbb R^d$ with a distributional coefficient in the non-linear term. The distribution is an element of a Besov space with negative regularity and the non-linearity…

偏微分方程分析 · 数学 2022-09-21 Elena Issoglio

We prove the existence of solutions to a non-linear, non-local, degenerate equation which was previously derived as the formal hydrodynamic limit of an active Brownian particle system, where the particles are endowed with a position and an…

偏微分方程分析 · 数学 2023-10-02 Martin Burger , Simon Schulz

Considering recent results revealing the existence of multi-scale rigid clusters of grains embedded in granular surface flows, i.e. flows down an erodible bed, we describe here the surface flows rheology through a non-local constitutive…

凝聚态物理 · 物理学 2016-02-26 D. Bonamy , P. Mills

In this paper, we prove that a particular nondegenerate, nonlinear, autonomous parabolic partial differential equation with a nonlocal mass transfer admits the local existence of classical solutions. The equation was developed to…

偏微分方程分析 · 数学 2024-05-07 Michael R. Lindstrom

A slowly-varying or thin-layer multiscale assumption empowers macroscale understanding of many physical scenarios from dispersion in pipes and rivers, including beams, shells, and the modulation of nonlinear waves, to homogenisation of…

动力系统 · 数学 2020-01-22 A. J. Roberts

We investigate the nonlocal behavior of passive tracer dispersion with random stopping at various sites in fluids. This kind of dispersion processes is modeled by an integral partial differential equation, i.e., an advection-diffusion…

动力系统 · 数学 2025-10-20 Jinqiao Duan , James R. Brannan , H. Gao

We construct flexible spatio-temporal models through stochastic partial differential equations (SPDEs) where both diffusion and advection can be spatially varying. Computations are done through a Gaussian Markov random field approximation…

统计方法学 · 统计学 2024-10-29 Martin Outzen Berild , Geir-Arne Fuglstad

This paper concerns a study of the pointwise behaviour of positive solutions to certain quasi-linear elliptic equations with natural growth terms, under minimal regularity assumptions on the underlying coefficients. Our primary results…

偏微分方程分析 · 数学 2015-05-28 Benjamin J. Jaye , Igor E. Verbitsky

In this chapter we provide an introduction to fractional dissipative partial differential equations (PDEs) with a focus on trying to understand their dynamics. The class of PDEs we focus on are reaction-diffusion equations but we also…

In this paper we study strong solutions of some non-local difference-differential equations linked to a class of birth-death processes arising as discrete approximations of Pearson diffusions by means of a spectral decomposition in terms of…

概率论 · 数学 2020-08-18 Giacomo Ascione , Nikolai Leonenko , Enrica Pirozzi

In this study, we consider a linearized compressible flow structure interaction PDE model for which the interaction interface is under the effect of material derivative term. While the linearization takes place around a constant pressure…

偏微分方程分析 · 数学 2021-02-09 Pelin Guven Geredeli

In this paper, we study some qualitative properties for an evolution problem that combines local and nonlocal diffusion operators acting in two different subdomains and, coupled in such a way that, the resulting evolution problem is the…

偏微分方程分析 · 数学 2020-03-05 Bruna C. dos Santos , Sergio M. Oliva , Julio D. Rossi

The aim of this paper is to study a PDE model for two diffusing species interacting by local size exclusion and global attraction. This leads to a nonlinear degenerate cross-diffusion system, for which we provide a global existence result.…

偏微分方程分析 · 数学 2017-03-21 Judith Berendsen , Martin Burger , Jan-Frederik Pietschmann

Nonlocal aggregation-diffusion models, when coupled with a spatial map, can capture cognitive and memory-based influences on animal movement and population-level patterns. In this work, we study a one-dimensional…

偏微分方程分析 · 数学 2025-03-17 Yurij Salmaniw , Di Liu , Junping Shi , Hao Wang
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