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We prove the existence of both local and global smooth solutions to the Cauchy problem in the whole space and the periodic problem in the n-dimensional torus for the incompressible viscoelastic system of Oldroyd-B type in the case of near…

偏微分方程分析 · 数学 2009-11-13 Zhen Lei , Chun Liu , Yi Zhou

We investigate the geometry of a family of equations in two dimensions which interpolate between the Euler equations of ideal hydrodynamics and the inviscid surface quasi-geostrophic equation. This family can be realised as geodesic…

微分几何 · 数学 2023-12-11 Martin Bauer , Patrick Heslin , Gerard Misiołek , Stephen C. Preston

We consider one dimensional isentropic compressible Navier-Stokes equations with Oldroyd-type constitutive law. By establishing uniform a priori estimates (with respect to relaxation time), we show global existence of smooth solutions with…

偏微分方程分析 · 数学 2025-09-18 Na Wang , Sébastien Boyaval , Yuxi Hu

The global regularity for the viscous Boussinesq equations is proved.

偏微分方程分析 · 数学 2009-11-10 Yanguang Charles Li

The classical system of shallow-water (Saint--Venant) equations describes long surface waves in an inviscid incompressible fluid of a variable depth. Although shock waves are expected in this quasilinear hyperbolic system for a wide class…

偏微分方程分析 · 数学 2016-03-16 Sergey N. Alexeenko , Marina V. Dontsova , Dmitry E. Pelinovsky

We study the Cauchy problem for the surface quasi-geostrophic (SQG) equations in a two-dimensional bounded domain with the homogeneous Dirichlet boundary condition. We establish the unique existence of strong solutions in the critical Besov…

偏微分方程分析 · 数学 2026-04-21 Tsukasa Iwabuchi

A classical 3-D thermoviscoelastic system of Kelvin-Voigt type is considered. The existence and uniqueness of a global regular solution is proved without small data assumption. The existence proof is based on the successive approximation…

偏微分方程分析 · 数学 2011-12-15 Irena Pawlow , Wojciech M. Zajaczkowski

We establish the global existence and uniqueness of classical solutions to the Cauchy problem for the isentropic compressible Navier-Stokes equations in three spatial dimensions with smooth initial data which are of small energy but…

数学物理 · 物理学 2015-03-17 Xiangdi Huang , Jing Li , Zhouping Xin

We study the tropical lines contained in smooth tropical surfaces in R^3. On smooth tropical quadric surfaces we find two one-dimensional families of tropical lines, like in classical algebraic geometry. Unlike the classical case, however,…

代数几何 · 数学 2007-12-08 Magnus Dehli Vigeland

This paper is concerned with the global solvability for the Navier-Stokes equations describing viscous free surface flows of infinite depth in three and higher dimensions. We first prove time weighted estimates of solutions to a linearized…

偏微分方程分析 · 数学 2023-11-21 Hirokazu Saito , Yoshihiro Shibata

We use a nonlocal maximum principle to prove the global existence of smooth solutions for a slightly supercritical surface quasi-geostrophic equation. By this we mean that the velocity field $u$ is obtained from the active scalar $\theta$…

偏微分方程分析 · 数学 2015-05-28 Michael Dabkowski , Alexander Kiselev , Vlad Vicol

We discuss several approaches to generalized solutions of problems describing the motion of inviscid fluids. We propose a new concept of dissipative solution to the compressible Euler system based on a careful analysis of possible…

偏微分方程分析 · 数学 2019-07-04 Dominic Breit , Eduard Feireisl , Martina Hofmanova

We prove the existence of non-smooth solutions to Special Lagrangian Equations in the non-convex case.

偏微分方程分析 · 数学 2015-05-13 Nikolai Nadirashvili , Serge Vladuts

We show that in dimension 3 axial-symmetric viscosity solutions of uniformly elliptic Hessian equations are in fact the classical ones.

偏微分方程分析 · 数学 2011-11-03 Nikolai Nadirashvili , Serge Vladuts

Our goal in this paper is to prove the global existence of a classical solution for the isentropic nozzle flow. Regarding this problem, there exist some global existence theorems of weak solutions. However, that of classical solutions does…

偏微分方程分析 · 数学 2024-02-09 Shih-Wei Chou , Bo-Chih Huang , Yun-guang Lu , Naoki Tsuge

In this paper, we are concerned with the Cauchy problem of the generalized surface quasi-geostrophic (SQG) equation in which the velocity field is expressed as $u=K\ast\omega$, where $\omega=\omega(x,t)$ is an unknown function and…

偏微分方程分析 · 数学 2018-10-02 Huan Yu , Xiaoxin Zheng , Quansen Jiu

This paper studies the dissipative generalized surface quasi-geostrophic equations in a supercritical regime where the order of the dissipation is small relative to order of the velocity, and the velocities are less regular than the…

偏微分方程分析 · 数学 2021-07-21 Michael S. Jolly , Anuj Kumar , Vincent R. Martinez

In this paper, we give a rigorous justification of the point vortex approximation to the family of modified surface quasi-geostrophic (mSQG) equations globally in time in both the inviscid and vanishing dissipative cases. This result…

偏微分方程分析 · 数学 2019-05-20 Matthew Rosenzweig

In to previous papers by the authors, classes of initial data to the three dimensional, incompressible Navier-Stokes equations were presented, generating a global smooth solution although the norm of the initial data may be chosen…

偏微分方程分析 · 数学 2007-10-31 Jean-Yves Chemin , Isabelle Gallagher

The hydrodynamic equations with quantum effects are studied in this paper. First we establish the global existence of smooth solutions with small initial data and then in the second part, we establish the convergence of the solutions of the…

数学物理 · 物理学 2016-07-27 Xueke Pu , Boling Guo