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We study an initial boundary value problem for a cross-diffusion system in population dynamics. The mathematical challenge is due to the fact that the determinant of the coefficient matrix of the system changes signs. As a result, the…

偏微分方程分析 · 数学 2023-04-18 Xiangsheng Xu

Considered in this paper is the modified Camassa-Holm equation with cubic nonlinearity, which is integrable and admits the single peaked solitons and multi-peakon solutions. The short-wave limit of this equation is known as the short-pulse…

偏微分方程分析 · 数学 2012-08-28 Ying Fu , Guilong Gui , Yue Liu , Changzheng Qu

In this paper we describe a strategy to study the Anderson model of an electron in a random potential at weak coupling by a renormalization group analysis. There is an interesting technical analogy between this problem and the theory of…

凝聚态物理 · 物理学 2009-10-28 J. Magnen , G. Poirot , V. Rivasseau

We establish the existence of solutions of the Cauchy problem for a higher-order semilinear parabolic equation by introducing a new majorizing kernel. We also study necessary conditions on the initial data for the existence of local-in-time…

偏微分方程分析 · 数学 2019-09-13 Kazuhiro Ishige , Tatsuki Kawakami , Shinya Okabe

This paper deals with the Cauchy problem associated to the nonlinear fourth-order Schr\"odinger equation with isotropic and anisotropic mixed dispersion. This model is given by the equation $i\partial _{t}u+\epsilon \Delta u+\delta A…

偏微分方程分析 · 数学 2016-05-03 Carlos Banquet , Elder J. Villamizar-Roa

We consider the time evolution of the supercritical Galton-Watson model of branching particles with extra parameter (mass). In the moment of the division the mass of the particle (which is growing linearly after the birth) is divided in…

概率论 · 数学 2018-08-20 Gregory Derfel , Yaqin Feng , Stanislav Molchanov

In the present manuscript we consider the Boltzmann equation that models a polyatomic gas by introducing one additional continuous variable, referred to as microscopic internal energy. We establish existence and uniqueness theory in the…

数学物理 · 物理学 2020-08-19 Irene M. Gamba , Milana Pavić-Čolić

This work is devoted to the study of scaling limits in small mutations and large time of the solutions u^$\epsilon$ of two deterministic models of phenotypic adaptation, where the parameter $\epsilon$ > 0 scales the size of mutations. The…

概率论 · 数学 2017-11-30 Nicolas Champagnat , Benoît Henry

We study the splitting scheme associated with the linear stochastic Cauchy problem dU(t) = AU(t) dt + dW(t), where A is the generator of an analytic C_0-semigroup S={S(t)} on a Banach space E and W={W(t)} is a Brownian motion with values in…

数值分析 · 数学 2010-02-25 Sonja Cox , Jan van Neerven

This work deals with the inhomogeneous Landau equation on the torus in the cases of hard, maxwellian and moderately soft potentials. We first investigate the linearized equation and we prove exponential decay estimates for the associated…

偏微分方程分析 · 数学 2016-02-17 Kleber Carrapatoso , Isabelle Tristani , Kung-Chien Wu

We consider some interacting particle processes with long-range dynamics: the zero-range and exclusion processes with long jumps. We prove that the hydrodynamic limit of these processes corresponds to a (possibly non-linear) fractional heat…

概率论 · 数学 2009-08-28 M. Jara

Consider a stochastic heat equation $\partial_t u = \kappa \partial^2_{xx}u+\sigma(u)\dot{w}$ for a space-time white noise $\dot{w}$ and a constant $\kappa>0$. Under some suitable conditions on the the initial function $u_0$ and $\sigma$,…

概率论 · 数学 2015-05-13 Mohammud Foondun , Davar Khoshnevisan

This work is concerned with a singularly perturbed stochastic nonlinear wave equation with a random dynamical boundary condition. A splitting skill is used to derive the approximating equation of the system in the sense of probability…

偏微分方程分析 · 数学 2012-08-30 Guanggan Chen , Jinqiao Duan , Jian Zhang

The Anderson model in one dimension is a quantum particle on a discrete chain of sites with nearest-neighbor hopping and random on-site potentials. It is a progenitor of many further models of disordered systems, and it has spurred numerous…

无序系统与神经网络 · 物理学 2025-11-27 Oleg Evnin

We are concerned with the global existence and vanishing dispersion limit of strong/classical solutions to the Cauchy problem of the one-dimensional barotropic compressible quantum Navier-Stokes equations, which consists of the compressible…

偏微分方程分析 · 数学 2023-12-08 Zhengzheng Chen , Huijiang Zhao

In this article, we investigate the asymptotic behavior of the solution to a one-dimensional stochastic heat equation with random nonlinear term generated by a stationary, ergodic random field. We extend the well-known central limit theorem…

概率论 · 数学 2018-09-12 Lu Xu

In this paper we will review the main results concerning the issue of stability for the determination unknown boundary portion of a thermic conducting body from Cauchy data for parabolic equations. We give detailed and selfcontained proofs.…

偏微分方程分析 · 数学 2009-11-13 Sergio Vessella

We consider an infinite-dimensional stochastic clustering model on $\mathbb{R}$. In discrete time, each point of a unit-intensity simple point process moves halfway toward either of its left or right neighbors, chosen uniformly at random.…

概率论 · 数学 2026-03-10 Partha S. Dey , S. Rasoul Etesami , Aditya S. Gopalan

In this paper, we study the Cauchy problem for a nonlinear wave equation with frictional and viscoelastic damping terms. As is pointed out by [8], in this combination, the frictional damping term is dominant for the viscoelastic one for the…

偏微分方程分析 · 数学 2016-05-25 Ryo Ikehata , Hiroshi Takeda

We establish exponential localization for a two-particle Anderson model in a Euclidean space ${\mathbb R}^{d}$, $d\ge 1$, in presence of a non-trivial short-range interaction and a random external potential of the alloy type. Specifically,…

数学物理 · 物理学 2009-07-10 A. Boutet de Monvel , V. Chulaevsky , P. Stollmann , Y. Suhov
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