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We consider the weak solution of the simplified Ericksen-Leslie system modeling compressible nematic liquid crystal flows in $\mathbb R^3$. When the initial data is small in $L^2$ and initial density is positive and essentially bounded, we…

偏微分方程分析 · 数学 2012-10-05 Guochun Wu , Zhong Tan

We study a nonlocal Cahn-Hilliard model for a multicomponent mixture with cross-diffusion effects and degenerate mobility. The nonlocality is described by means of a symmetric singular kernel. We define a notion of weak solution adapted to…

偏微分方程分析 · 数学 2026-05-22 Elisa Davoli , Greta Marino , Jan-Frederik Pietschmann

In this paper we prove the global existence of classical static solutions of Einstein gravitational theory coupled to a real scalar field where the spacetime admits spherically symmetry. The equations of motions can then be reduced into a…

In this paper, we study the existence and uniqueness of weak solution of a nonlinear poroelasticity model. To better describe the proccess of deformation and diffusion underlying in the original model, we firstly reformulate the nonlinear…

偏微分方程分析 · 数学 2021-12-24 Zhihao Ge , Wenlong He

In this paper, we study a one dimensional nonlinear equation with diffusion $-\nu(-\partial_{xx})^{\frac{\alpha}{2}}$ for $0\leq \alpha\leq 2$ and $\nu>0$. We use a viscous-splitting algorithm to obtain global nonnegative weak solutions in…

偏微分方程分析 · 数学 2021-03-08 Yu Gao , Cong Wang , Xiaoping Xue

The purpose of this paper is to study weak solutions of a nonlinear Neumann problem considered on a ball. Assuming that the potential is invariant, we consider an orbit of critical points, i.e. we do not assume that critical points are…

偏微分方程分析 · 数学 2017-09-11 Anna Gołębiewska , Joanna Kluczenko , Piotr Stefaniak

In this paper, we study some existence and uniqueness results for systems of differential equations in which each of equations of the system involves a different Stieltjes derivative. Specifically, we show that this problems can only have…

经典分析与常微分方程 · 数学 2025-01-14 Ignacio Márquez Albés , F. Adrián F. Tojo

We establish the existence of weak solutions for a nonlocal Klausmeier model within a small time interval $[0, T)$. The Klausmeier model is a coupled, nonlinear system of partial differential equations governing plant biomass and water…

偏微分方程分析 · 数学 2024-12-20 Gabriela Jaramillo , Cristian Meraz

In this paper, we prove the existence and the uniqueness of a weak and mild solution of the following nonlinear parabolic problem involving the porous $p$-fractional Laplacian: \begin{equation*} \begin{cases} \partial_t…

偏微分方程分析 · 数学 2024-11-22 Loïc Constantin , Jacques Giacomoni , Guillaume Warnault

In this paper, we study the global existence and uniqueness, Gaussian lower bound, and moment estimates in the spatially homogeneous Boltzmann equation for Fermi-Dirac particles for hard potential ($0\leq \gamma\leq 2$) with angular cutoff…

偏微分方程分析 · 数学 2025-11-06 Gayoung An , Sungbin Park

We establish the global existence of weak martingale solutions to the simplified stochastic Ericksen--Leslie system modeling the nematic liquid crystal flow driven by Wiener-type noises on the two-dimensional bounded domains. The…

偏微分方程分析 · 数学 2020-11-19 Hengrong Du , Changyou Wang

We are concerned with the question of well-posedness of stochastic three dimensional incompressible Euler equations. In particular, we introduce a novel class of dissipative solutions and show that (i) existence; (ii) weak--strong…

概率论 · 数学 2020-09-23 Martina Hofmanová , Rongchan Zhu , Xiangchan Zhu

Our interest itself of this paper is strongly inspired from an open problem in the paper [1] published by D'Abbicco. In this article, we would like to study the Cauchy problem for a weakly coupled system of semi-linear structurally damped…

偏微分方程分析 · 数学 2019-11-12 Tuan Anh Dao

In the present paper, we give some examples of stochastic differential equations which have delicateness in the Markov and strong Markov properties, the uniqueness locally in time and globally in time, and initial conditions. Moreover, we…

概率论 · 数学 2022-09-14 Seiichiro Kusuoka

This paper concerns the McKean-Vlasov stochastic differential equation (SDE) with common noise. An appropriate definition of a weak solution to such an equation is developed. The importance of the notion of compatibility in this definition…

概率论 · 数学 2020-06-29 William R. P. Hammersley , David Šiška , Łukasz Szpruch

We study the question of the existence of infinitely many weak solutions for nonlocal equations of fractional Laplacian type with homogeneous Dirichlet boundary data, in presence of a superlinear term. Starting from the well-known…

偏微分方程分析 · 数学 2016-12-12 Giovanni Molica Bisci , Dušan Repovš , Raffaella Servadei

Dissipative solutions have recently been studied as a generalized concept for weak solutions of the complete Euler system. Apparently, these are expectations of suitable measure-valued solutions. Motivated from [Feireisl, Ghoshal and Jana,…

偏微分方程分析 · 数学 2020-05-14 Shyam Sundar Ghoshal , Animesh Jana

This article is devoted to the study of the critical dissipative surface quasi-geostrophic $(SQG)$ equation in $\mathbb{R}^2$. For any initial data $\theta_{0}$ belonging to the space $\Lambda^{s} ( H^{s}_{uloc}(\mathbb{R}^2)) \cap…

偏微分方程分析 · 数学 2015-06-04 Omar Lazar

We study the global existence and decay estimates for nonlinear wave equations with the space-time dependent dissipative term in an exterior domain. The linear dissipative effect may vanish in a compact space region. Moreover the nonlinear…

偏微分方程分析 · 数学 2014-02-18 Tomonari Watanabe

We prove the existence and uniqueness of the mild solution for a nonlinear stochastic heat equation defined on an unbounded spatial domain. The nonlinearity is not assumed to be globally, or even locally, Lipschitz continuous. Instead the…

概率论 · 数学 2021-02-12 Michael Salins