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We prove a global well-posedness and regularity result of strong solutions to a slightly modified Michelson-Sivashinsky equation in any spatial dimension and in the absence of physical boundaries. Local-in-time well-posedness (and…

偏微分方程分析 · 数学 2021-05-17 Hussain Ibdah

Here, we study a discrete Coagulation-Fragmentation equation with a multiplicative coagulation kernel and a constant fragmentation kernel, which is critical. We apply the discrete Bernstein transform to the original…

偏微分方程分析 · 数学 2024-09-27 Jiwoong Jang , Hung V. Tran

The dynamics of a coagulation-fragmentation equation with multiplicative coagulation kernel and critical singular fragmentation is studied. In contrast to the coagulation equation, it is proved that fragmentation prevents the occurrence of…

偏微分方程分析 · 数学 2014-07-08 Philippe Laurencot , Henry Van Roessel

We prove the existence of a one-parameter family of self-similar solutions with time-dependent tails for Smoluchowski's coagulation equation, for a class of rate kernels $K(x,y)$ which are homogeneous of degree $\gamma\in(-\infty,1)$ and…

偏微分方程分析 · 数学 2018-02-20 Marco Bonacini , Barbara Niethammer , Juan J. L. Velázquez

We consider in this work a model for aggregation, where the coalescing particles initially have a certain number of potential links (called arms) which are used to perform coagulations. There are two types of arms, male and female, and two…

数学物理 · 物理学 2009-11-09 Raoul Normand

In this paper, we aim to prove the existence of global Martingale solution to Stochastic Constrained Modified Swift-Hohenberg Equation driven by stratonovich multiplicative noise. This equation belongs to class of amplitude equations which…

概率论 · 数学 2025-05-06 Saeed Ahmed , Javed Hussain

In this paper we consider the long time asymptotics of a linear version of the Smoluchowski equation which describes the evolution of a tagged particle moving at constant speed in a random distribution of fixed particles. The volumes $v$ of…

偏微分方程分析 · 数学 2018-04-25 Barbara Niethammer , Alessia Nota , Sebastian Throm , Juan J. L. Velázquez

We study the stochastic coagulation equation using simplified models and efficient Monte Carlo simulations. It is known that (i) runaway growth occurs if the two-body coalescence kernel rises faster than linearly in the mass of the heavier…

天体物理学 · 物理学 2015-06-24 Leonid Malyshkin , Jeremy Goodman

In the present article we consider several issues concerning the doubly parabolic Keller-Segel system in the plane, when the initial data belong to critical scaling-invariant Lebesgue spaces. More specifically, we analyze the global…

偏微分方程分析 · 数学 2014-03-12 Lucilla Corrias , Miguel Escobedo , Julia Matos

We study existence and convergence properties of least-energy symmetric solutions (l.e.s.s.) to the pure critical problem \begin{equation*} (-\Delta)^su_s=|u_s|^{2^\star_s-2}u_s, \quad u_s\in D^s_0(\Omega),\quad 2^\star_s:=\frac{2N}{N-2s},…

偏微分方程分析 · 数学 2021-05-26 Víctor Hernández-Santamaría , Alberto Saldaña

We construct unique martingale solutions to the damped stochastic wave equation $$ \mu \frac{\partial^2u}{\partial t^2}(t,x)=\Delta u(t,x)-\frac{\partial u}{\partial t}(t,x)+b(t,x,u(t,x))+\sigma(t,x,u(t,x))\frac{dW_t}{dt},$$ where $\Delta$…

概率论 · 数学 2025-04-29 Yi Han

The continuous generalized exchange-driven growth model (CGEDG) is a system of integro-differential equations describing the evolution of cluster mass under mass exchange. The rate of exchange depends on the masses of the clusters involved…

概率论 · 数学 2025-06-03 Chun Yin Lam , André Schlichting

Existence, non-existence, and uniqueness of mass-conserving weak solutions to the continuous collision-induced nonlinear fragmentation equations are established for the collision kernels $\Phi$ satisfying $\Phi(x_1,x_2)={x_1}^{\lambda_1}…

偏微分方程分析 · 数学 2024-01-22 Ankik Kumar Giri , Ram Gopal Jaiswal , Philippe Laurençot

We investigate the well-posedness and asymptotic self-similarity of solutions to a generalized Smoluchowski coagulation equation recently introduced by Bertoin and Le Gall in the context of continuous-state branching theory. In particular,…

概率论 · 数学 2015-03-18 Gautam Iyer , Nicholas Leger , Robert L. Pego

In this paper, we study the global existence of solutions of the Cauchy problem for a class of weakly dissipative nonlinear dispersive wave equations…

偏微分方程分析 · 数学 2026-03-24 Yiyao Lian , Zhenyu Wan , Zhaoyang Yin

This paper studies the three-dimensional stochastic chemotaxis-Navier-Stokes (SCNS) system subjected to a L\'{e}vy-type random external force in bounded domain. Up to now, the existing results concerning global solvability of SCNS system…

偏微分方程分析 · 数学 2023-12-12 Lei Zhang , Bin Liu

In this work, we establish the existence of mass-conserving weak solutions to a nonlinear collision-induced breakage equation in which binary collisions may trigger particle breakup. The result is proved for a class of product-type…

偏微分方程分析 · 数学 2026-05-29 Mashkoor Ali

We show that models for homogeneous and heterogeneous nucleation of D-dimensional droplets in a d-dimensional medium are described in mean-field by a modified Smoluchowski equation for the distribution N(s,t) of droplets masses s, with…

统计力学 · 物理学 2009-10-30 Stephane Cueille , Clement Sire

We developed an analytical theoretical method to determine the microscopical structure of weakly to moderately sheared colloidal suspensions in dilute conditions. The microstructure is described by the static structure factor, obtained by…

软凝聚态物质 · 物理学 2022-05-25 Simone Riva , Luca Banetta , Alessio Zaccone

We study classical solutions of one dimensional rotating shallow water system which plays an important role in geophysical fluid dynamics. The main results contain two contrasting aspects. First, when the solution crosses certain threshold,…

偏微分方程分析 · 数学 2017-01-11 Bin Cheng , Peng Qu , Chunjing Xie