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We investigate the initial-value problem for the relativistic Euler equations governing isothermal perfect fluid flows, and generalize an approach introduced by LeFloch and Shelukhin in the non-relativistic setting. We establish the…

偏微分方程分析 · 数学 2007-05-23 Philippe G. LeFloch , Mitsuru Yamazaki

We study the stability of recently constructed self-similar blow-up solutions to the incompressible Euler equation. A consequence of our work is the existence of finite-energy $C^{1,\alpha}$ solutions that become singular in finite time in…

偏微分方程分析 · 数学 2019-11-01 Tarek M. Elgindi , Tej-Eddine Ghoul , Nader Masmoudi

We consider solutions to the Cauchy problem for the incompressible Euler equations on the 3-dimensional torus which are continuous or H\"older continuous for any exponent $\theta<\frac{1}{16}$. Using the techniques introduced in \cite{DS12}…

偏微分方程分析 · 数学 2013-02-06 Sara Daneri

The blow-up in finite time for the solutions to the initial-boundary value problem associated to the multi-dimensional quantum hydrodynamic model in a bounded domain is proved. The model consists on conservation of mass equation and a…

数学物理 · 物理学 2007-05-23 Irene M. Gamba , Maria Pia Gualdani , Ping Zhang

In this paper we study classification of homogeneous solutions to the stationary Euler equation with locally finite energy. Written in the form $u = \nabla^\perp \Psi$, $\Psi(r,\theta) = r^{\lambda} \psi(\theta)$, for $\lambda >0$, we show…

偏微分方程分析 · 数学 2015-08-11 Xue Luo , Roman Shvydkoy

We prove the existence of infinitely many nonnegative solutions to the following nonlocal elliptic partial differential equation involving singularities \begin{align} (-\Delta)_{p(\cdot)}^{s}…

偏微分方程分析 · 数学 2021-08-26 Sekhar Ghosh , Debajyoti Choudhuri , Ratan Kr. Giri

In this paper we consider unconditionally energy stable numerical schemes for the nonstationary 3D magneto-micropolar equations that describes the microstructure of rigid microelements in electrically conducting fluid flow under some…

数值分析 · 数学 2024-03-19 Hailong Qiu

For any $\alpha \in (0,1/3)$, we construct exact $C^{\alpha}$ self-similar blowup profiles for the vorticity of the 3D incompressible Euler equation without swirl, and build on them to prove asymptotically self-similar blowup from…

偏微分方程分析 · 数学 2026-05-20 Jiajie Chen

We design an energy-stable and asymptotic-preserving finite volume scheme for the compressible Euler system. Using the relative energy framework, we establish rigorous error estimates that yield convergence of the numerical solutions in two…

In these notes we discuss the conservation of the energy for weak solutions of the two-dimensional incompressible Euler equations. Weak solutions with vorticity in $L^\infty_t L^p_x$ with $p\geq 3/2$ are always conservative, while for less…

偏微分方程分析 · 数学 2022-03-24 Gennaro Ciampa

The three-body problem is a fundamental long-standing open problem, with applications in all branches of physics, including astrophysics, nuclear physics and particle physics. In general, conserved quantities allow to reduce the formulation…

地球与行星天体物理 · 物理学 2024-05-28 Barak Kol

This paper presents a novel approach to establish a blow-up mechanism for the forced 3D incompressible Euler equations, with a specific focus on non-axisymmetric solutions. We construct solutions on $\mathbb{R}^3$ within the function space…

偏微分方程分析 · 数学 2023-09-18 Diego Córdoba , Luis Martínez-Zoroa

We show the short-time existence and nonlinear stability of vortex sheets for the nonisentropic compressible Euler equations in two spatial dimensions, based on the weakly linear stability result of Morando--Trebeschi (2008) [20]. The…

偏微分方程分析 · 数学 2020-09-24 Alessandro Morando , Paola Trebeschi , Tao Wang

We will look at reaction-diffusion type equations of the following type, $$\partial^\beta_tV(t,x)=-(-\Delta)^{\alpha/2} V(t,x)+I^{1-\beta}_t[V(t,x)^{1+\eta}].$$ We first study the equation on the whole space by making sense of it via an…

偏微分方程分析 · 数学 2018-09-20 Sunday A. Asogwa , Mohammud Foondun , Jebessa B. Milena , Erkan Nane

We prove an extension theorem for local solutions of the 3d incompressible Euler equations. More precisely, we show that if a smooth vector field satisfies the Euler equations in a spacetime region $\Omega\times(0,T)$, one can choose an…

偏微分方程分析 · 数学 2025-10-01 Alberto Enciso , Javier Peñafiel-Tomás , Daniel Peralta-Salas

In this paper the author considers the global existence and well-posedness of the non-linear wave equation $\partial_t^2 u - \Delta u = -|u|^{p-1} u$ in 3-dimensional space, assuming that the initial data is in the space $(\dot{H}^s \cap…

偏微分方程分析 · 数学 2012-05-23 Ruipeng Shen

We prove a global existence theorem for the $3\times 3$ system of relativistic Euler equations in one spacial dimension. It is shown that in the ultra-relativistic limit, there is a family of equations of state that satisfy the second law…

偏微分方程分析 · 数学 2007-05-23 Brian D. Wissman

We investigate the grand potential of the one-dimensional Hubbard model in the high temperature limit, calculating the coefficients of the high temperature expansion ($\beta$-expansion) of this function up to order $\beta^4$ by an…

凝聚态物理 · 物理学 2016-08-31 I. C. Charret , E. V. Correa Silva , S. M. de Souza , M. T. Thomaz , A. T. Costa , O. Rojas Santos

We study the Euler equations describing the motion of an incompressible fluid on the cubic torus with real initial data. We construct solutions on the Fourier side which display a sudden loss of regularity within finite time even for highly…

偏微分方程分析 · 数学 2024-03-18 Henrik Ueberschaer

We show the existence of continuous periodic solutions of the 3D incompressible Euler equations which dissipate the total kinetic energy.

偏微分方程分析 · 数学 2017-08-02 Camillo De Lellis , László Székelyhidi