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Using continuation methods and bifurcation theory, we study the exact multiplicity of periodic solutions, and the global solution structure, for periodic problems of first order. The results are applied to a population model with fishing,…

动力系统 · 数学 2026-01-23 Philip Korman , Dieter S. Schmidt

Motivated by \cite{DG19}, we prove the global existence and large time behavior of small solutions to 2-D Prandtl system for data with Gevrey 2 regularity in the $x$ variable and Sobolev regularity in the $y$ variable. In particular, we…

偏微分方程分析 · 数学 2021-03-02 Chao Wang Yuxi Wang , Ping Zhang

We are concerned with an isothermal model of viscous and capillary compressible fluids derived by J. E. Dunn and J. Serrin (1985), which can be used as a phase transition model. Compared with the classical compressible Navier-Stokes…

偏微分方程分析 · 数学 2018-05-07 Frédéric Charve , Raphaël Danchin , Jiang Xu

In the present paper, classical tools of convex analysis are used to study the solution set to a certain class of set-inclusive generalized equations. A condition for the solution existence and global error bounds is established, in the…

最优化与控制 · 数学 2019-04-11 A. Uderzo

We study the Cauchy problem of the spatially homogenous fractional Kramers-Fokker-Planck equation and show that the solution enjoys Gevrey regularity and decay estimation with an L2 initial datum for positive time.

偏微分方程分析 · 数学 2023-05-16 Chao-Jiang Xu , Yan Xu

We consider degenerate and singular parabolic equations with $p$-Laplacian structure in bounded nonsmooth domains when the right-hand side is a signed Radon measure with finite total mass. We develop a new tool that allows global regularity…

偏微分方程分析 · 数学 2021-01-26 Sun-Sig Byun , Jung-Tae Park , Pilsoo Shin

In this paper, we construct a class of global large solution to the compressible Navier-Stokes equations in the whole space $\R^d$. Precisely speaking, our choice of special initial data whose $\dot{B}^{-1}_{\infty,\infty}$ norm can be…

偏微分方程分析 · 数学 2019-03-26 Jinlu Li , Yanghai Yu , Weipeng Zhu , Zhaoyang Yin

We consider the initial value problem (IVP) associated to a fifth order KdV-BBM type model that describes the propagation of unidirectional water waves. We prove that the regularity in the initial data propagates in the solution, in other…

偏微分方程分析 · 数学 2023-07-26 Xavier Carvajal , Mahendra Panthee

The paper addresses questions of existence and regularity of solutions to linear partial differential equations whose coefficients are generalized functions or generalized constants in the sense of Colombeau. We introduce various new…

偏微分方程分析 · 数学 2007-05-23 Guenther Hoermann , Michael Oberguggenberger

In this paper, we prove the global existence of analytical solutions to the compressible Oldroyd-B model without retardation near a non-vacuum equilibrium in ${\mathbb R}^n$ $(n=2,3)$. Zero retardation results in zero dissipation in the…

偏微分方程分析 · 数学 2023-06-01 Xinghong Pan

We prove global regularity of solutions of Oldroyd-B equations in 2 spatial dimensions with spatial diffusion of the polymeric stresses.

偏微分方程分析 · 数学 2015-06-04 Peter Constantin , Markus Kliegl

We investigate the behavior of the solutions of a class of certain strictly hyperbolic equations defined on $[0,T]\times \R^n$ in relation to a class of metrics on the phase space. In particular, we study the global regularity and decay…

偏微分方程分析 · 数学 2021-03-04 Rahul Raju Pattar , N. Uday Kiran

In this work, we study the linear Landau equation with soft potential and show that the solution to the Cauchy problem with initial datum in $L^{2}(\mathbb{R}^3)$ enjoys an analytic regularizing effect, and the evolution of analytic radius…

偏微分方程分析 · 数学 2022-05-17 Hao-Guang Li , Chao-Jiang Xu

In this paper, we study a class of strongly degenerate ultraparabolic equations with analytic coefficients. We demonstrate that the Cauchy problem exhibits an analytic smoothing effect. This means that, with an initial datum belonging to…

偏微分方程分析 · 数学 2024-06-14 Xiao-Dong Cao , Chao-Jiang Xu

We derive some regularity estimates of the solution to a time fractional diffusion equation, that are useful for numerical analysis, and partially unravel the singularity structure of the solution with respect to the time variable.

偏微分方程分析 · 数学 2017-04-04 Binjie Li , Xiaoping Xie

Motivated by the ubiquitous sampled-data setup in applied control, we examine the stability of a class of difference equations that arises by sampling a right- or left-invariant flow on a matrix Lie group. The map defining such a difference…

动力系统 · 数学 2019-02-11 Philip James McCarthy , Christopher Nielsen

The global regularity problem for the periodic Navier-Stokes system asks whether to every smooth divergence-free initial datum $u_0: (\R/\Z)^3 \to \R^3$ there exists a global smooth solution u. In this note we observe (using a simple…

偏微分方程分析 · 数学 2009-05-21 Terence Tao

Spatially periodic complex-valued solutions of the Burgers and KdV-Burgers equations are studied in this paper. It is shown that for any sufficiently large time T, there exists an explicit initial data such that its corresponding solution…

偏微分方程分析 · 数学 2015-05-13 Netra Khanal , Jiahong Wu , Juan-Ming Yuan , Bing-Yu Zhang

We consider a nonlocal nonlinear model with fractional diffusion motivated by studies of electroconvection phenomena in incompressible viscous fluids. We address the global well-posedness, global regularity and long time dynamics of the…

偏微分方程分析 · 数学 2023-10-02 E. Abdo , M. Ignatova

In this work, we study the nonlinear spatially homogeneous Landau equation with hard potential in a close-to-equilibrium framework, we show that the solution to the Cauchy problem with $L^2$ initial datum enjoys a analytic Gelfand-Shilov…

偏微分方程分析 · 数学 2022-05-24 Hao-Guang Li , Chao-Jiang Xu