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We are concerned with a global existence theory for finite-energy solutions of the multidimensional Euler-Poisson equations for both compressible gaseous stars and plasmas with large initial data of spherical symmetry. One of the main…

偏微分方程分析 · 数学 2023-11-14 Gui-Qiang G. Chen , Lin He , Yong Wang , Difan Yuan

Global existence for the nonisentropic compressible Euler equations with vacuum boundary for all adiabatic constants $\gamma > 1$ is shown through perturbations around a rich class of background nonisentropic affine motions. The notable…

偏微分方程分析 · 数学 2021-06-03 Calum Rickard , Mahir Hadzic , Juhi Jang

The unique global strong solution in the Chemin-Lerner type space to the Cauchy problem on the Boltzmann equation for hard potentials is constructed in perturbation framework. Such solution space is of critical regularity with respect to…

偏微分方程分析 · 数学 2013-10-11 Renjun Duan , Shuangqian Liu , Jiang Xu

This paper concerns supersonic flows with nonzero vorticity governed by the steady Euler-Poisson system, under the coupled effects of the electric potential and the geometry of a convergent nozzle. By the coordinate rotation, the existence…

偏微分方程分析 · 数学 2026-05-01 Yuanyuan Xing , Zihao Zhang

Joint-Embedding Predictive Architectures (JEPAs) provide a simpleframework for learning world models by predicting future latent representations.However, JEPA training is subject to a bias-variance tradeoff.Without sufficient structural…

机器学习 · 计算机科学 2026-05-12 Kai Zhao , Dongliang Nie , Yuchen Lin , Zhehan Luo , Yixiao Gu , Deng-Ping Fan , Dan Zeng

In this paper, we consider the Cauchy problem of the multi-dimensional compressible Navier-Stokes-Euler system for two-phase flow motion, which consists of the isentropic compressible Navier-Stokes equations and the isothermal compressible…

偏微分方程分析 · 数学 2024-08-09 Hai-Liang Li , Ling-Yun Shou

We construct local (in time) strong solutions in {$H^s(\mathbb{R}^3)$, $s>3/2$} and global weak solutions with finite energy for both the Pauli-Darwin and the Pauli-Poisswell systems. These are the first rigorous results on local and global…

偏微分方程分析 · 数学 2025-12-02 Pierre Germain , Norbert J. Mauser , Jakob Möller

We are concerned with global finite-energy solutions of the three-dimensional compressible Euler-Poisson equations with gravitational potential and general pressure law, especially including the constitutive equation of white dwarf stars.…

偏微分方程分析 · 数学 2024-03-14 Gui-Qiang G. Chen , Feimin Huang , Tianhong Li , Weiqiang Wang , Yong Wang

We study a singular elliptic problem driven by a mixed local-nonlocal operator of the form \begin{equation*} \begin{aligned} -\Delta_p u + (-\Delta_q)^s u &= \frac{\lambda}{u^{\delta}} + u^r \text{ in } \Omega\newline u > 0 \text{ in }…

偏微分方程分析 · 数学 2026-02-13 R. Dhanya , Sarbani Pramanik

Here we investigate global strong solutions for a class of partially dissipative hyperbolic systems in the framework of critical homogeneous Besov spaces. Our primary goal is to extend the analysis of our previous paper [10] to a functional…

偏微分方程分析 · 数学 2022-01-19 Timothée Crin-Barat , Raphaël Danchin

The work addresses a singular limit for a rotating compressible Euler system in the low Mach number and low Rossby number regime. Based on the concept of dissipative measure-valued solution, the quasi-geostrophic system is identified as the…

偏微分方程分析 · 数学 2020-02-04 Sarka Necasova , Tong Tang

We establish existence, uniqueness and optimal regularity results for very weak solutions to certain nonlinear elliptic boundary value problems. We introduce structural asymptotic assumptions of Uhlenbeck type on the nonlinearity, which are…

偏微分方程分析 · 数学 2016-08-03 Miroslav Bulíček , Lars Diening , Sebastian Schwarzacher

In this paper we consider the local and global well-posedness to the density-dependent incompressible viscoelastic fluids. We first study some linear models associated to the incompressible viscoelastic system. Then we approximate the…

偏微分方程分析 · 数学 2012-10-23 Daoyuan Fang , Bin Han , Ting Zhang

We investigate the global well-posedness of the compressible Euler system with damping in Rd (d\geq1) and its relaxation limit toward the porous medium equation. In [12], the first author and Danchin studied these two problems in hybrid…

偏微分方程分析 · 数学 2026-02-04 Timothée Crin-Barat , Zihao Song

The control of energy dissipation in non-spherical particle contact remains an unresolved problem. Unlike spherical contact, where the interaction reduces to a one-dimensional normal oscillator, both the effective inertia and the effective…

计算物理 · 物理学 2026-04-21 Y. T. Feng

An important problem in the theory of compressible gas flows is to understand the singular behavior of vacuum states. The main difficulty lies in the fact that the system becomes degenerate at the vacuum boundary, where the characteristics…

偏微分方程分析 · 数学 2008-06-12 Juhi Jang , Nader Masmoudi

In this paper, we prove the existence and stability of subsonic flows for steady full Euler-Poisson system in a two dimensional nozzle of finite length when imposing the electric potential difference on non-insulated boundary from a fixed…

偏微分方程分析 · 数学 2013-09-16 Myoungjean Bae , Ben Duan , Chunjing Xie

This work investigates the global exponential stabilization of a degenerate Euler-Bernoulli beam subjected to a non uniform axial force and a delayed feedback control. First, we address the well-posedness of the system by constructing an…

偏微分方程分析 · 数学 2026-02-23 Ben Bakary Junior Siriki , Adama Coulibaly

For systems in the universality class of the three-dimensional Ising model we compute the critical exponents in the local potential approximation (LPA), that is, in the framework of the Wegner-Houghton equation. We are mostly interested in…

高能物理 - 格点 · 物理学 2015-06-25 M. M. Tsypin

Some systems of nonlinear wave equations admit global solutions for all sufficiently small initial data, while others do not. The (classical) null condition guarantees that such a result holds, but it is too strong to capture certain…

偏微分方程分析 · 数学 2019-06-06 Joseph Keir