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This article studies the aggregation diffusion equation \[ \partial_t\rho = \Delta^\frac{\alpha}{2} \rho + \lambda\,\mathrm{div}((K*\rho)\rho), \] where $\Delta^\frac{\alpha}{2}$ denotes the fractional Laplacian and $K =…

偏微分方程分析 · 数学 2024-01-12 Laurent Lafleche , Samir Salem

This paper is concerned with global existence as well as infinite-time blowups of classical solutions to the following fully parabolic kinetic system \begin{equation} \begin{cases} u_t=\Delta (\gamma (v)u) v_t-\Delta v+v=u \end{cases}…

偏微分方程分析 · 数学 2020-01-07 Kentarou Fujie , Jie Jiang

In this paper, we consider the Cauchy problem for a generalized parabolic-elliptic Keller-Segel equation with a fractional dissipation and advection by a weakly mixing (see Definition \ref{def:2.4}). Here the attractive kernel has strong…

偏微分方程分析 · 数学 2021-03-09 Binbin Shi

In this work we consider the superfluid stiffness of a generically non-Galilean invariant interacting system and investigate under what conditions the stiffness may nonetheless approach the Galilean-invariant value $n/m$. Within Eliashberg…

超导电性 · 物理学 2023-12-22 Zachary M. Raines , Shang-Shun Zhang , Andrey V. Chubukov

We construct global generalized solutions to the chemotaxis system \begin{align*} \begin{cases} u_t = \Delta u - \nabla \cdot (u \nabla v) + \lambda(x) u - \mu(x) u^\kappa,\\ v_t = \Delta v - v + u \end{cases} \end{align*} in smooth,…

偏微分方程分析 · 数学 2020-12-08 Jianlu Yan , Mario Fuest

In this paper, we investigate the dynamics of an incompressible viscous Navier-Stokes fluid evolving above a one-dimensional flat surface. The fluid is subject to a uniform gravitational field and capillary forces acting along the free…

偏微分方程分析 · 数学 2026-02-19 Xiaoding Yang

For any bounded smooth domain $\Omega\subset\mathbb R^3$, we establish the global existence of a weak solution $u:\Omega\times (0,+\infty)\to\mathbb R^3\times\mathbb S^2$ of the initial-boundary value (or the Cauchy) problem of the…

偏微分方程分析 · 数学 2014-08-20 Fanghua Lin , Changyou Wang

As is well-known, the solutions to the Patlak-Keller-Segel system in 3D may blow up in finite time regardless of any initial cell mass. In this paper, we investigate the existence of global bounded solutions of the 3D…

偏微分方程分析 · 数学 2025-09-24 Shikun Cui , Lili Wang , Wendong Wang , Juncheng Wei , Guoxu Yang

A fully parabolic chemotaxis model of Keller-Segel type with local sensing is considered. The system features a signal-dependent asymptotically non-degenerate motility function, which accounts for a repulsion-dominated chemotaxis. Global…

偏微分方程分析 · 数学 2024-11-19 Jie Jiang , Philippe Laurençot

We consider a fluid of $d$-dimensional spherical particles interacting via a pair potential $\phi(r)$ which takes a finite value $\epsilon$ if the two spheres are overlapped ($r<\sigma$) and 0 otherwise. This penetrable-sphere model has…

统计力学 · 物理学 2015-06-29 L. Acedo , A. Santos

We consider a family of Leray-$\alpha$ models with periodic boundary conditions in three space dimensions. Such models are a regularization, with respect to a parameter $\theta$, of the Navier-Stokes equations. In particular, they share…

偏微分方程分析 · 数学 2011-03-07 Hani Ali , Zied Ammari

We study well-posedness and asymptotic dynamics of a coupled system consisting of linearized 3D Navier--Stokes equations in a bounded domain and a classical (nonlinear) full von Karman shallow shell equations that accounts for both…

偏微分方程分析 · 数学 2011-12-30 Igor Chueshov , Iryna Ryzhkova

It is known that solutions of the parabolic elliptic Keller-Segel equations in the two dimensional plane decay, as time goes to infinity, provided the initial data admits sub-critical mass and finite second moments, while such solution…

偏微分方程分析 · 数学 2018-02-27 Debabrata Karmakar , Gershon Wolansky

In this paper we consider a one-dimensional fully parabolic quasilinear Keller-Segel system with critical nonlinear diffusion. We show uniform-in-time boundedness of solutions, which means, that unlike in higher dimensions, there is no…

偏微分方程分析 · 数学 2019-08-20 Bartosz Bieganowski , Tomasz Cieślak , Kentarou Fujie , Takasi Senba

It is shown in Ferrari \cite{Ferrari-1993CMP} that if $[0, T^*)$ is the maximal time interval of existence of a smooth solution of the incompressible Euler equations in a bounded, simply-connected domain in $\mathbb{R}^3$, then…

偏微分方程分析 · 数学 2023-09-13 Chenyun Luo , Kai Zhou

We rigorously derive a two-dimensional Keller-Segel type system with signal-dependent sensitivity from a stochastic interacting particle model. By employing suitably defined stopping times, we prove that the convergence of the interacting…

概率论 · 数学 2026-05-19 Jinhuan Wang , Keyu Li , Hui Huang

It is well known that solutions to the Patlak--Keller--Segel system on $\mathbb{R}^2$ blow up in finite time if the initial mass exceeds $8\pi$. In this paper, we investigate the mixing effect induced by a Couette flow $(Ay, 0)$ with a…

偏微分方程分析 · 数学 2025-12-05 Yubo Chen , Wendong Wang , Guoxu Yang

This paper is concerned with a parabolic-elliptic Keller-Segel system where both diffusive and chemotactic coefficients (motility functions) depend on the chemical signal density. This system was originally proposed by Keller and Segel in…

偏微分方程分析 · 数学 2021-07-28 Zhi-An Wang

Under the action of a time-periodic external forces we prove the existence of at least one time-periodic weak solution for the interaction between a three-dimensional incompressible fluid, governed by the Navier- Stokes equation and a two…

偏微分方程分析 · 数学 2022-04-08 Claudiu Mîndrilă , Sebastian Schwarzacher

We show global existence and boundedness of classical solutions to a virus infection model with chemotaxis in bounded smooth domains of arbitrary dimension and for any sufficiently regular nonnegative initial data and homogeneous Neumann…

偏微分方程分析 · 数学 2017-11-06 Bingran Hu , Johannes Lankeit
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