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We establish local and global well-posedness for the Cauchy problem of a generalized Camassa-Holm equation where orders of the momentum and the nonlinearity can be arbitrarily high. More precisely, we consider the equation \begin{equation*}…

偏微分方程分析 · 数学 2026-03-30 Nesibe Ayhan , Nilay Duruk Mutlubas , Bao Quoc Tang

We study the Cauhcy problem for space-time fractional nonlinear Schr\"odinger equation with a general nonlinearity. We prove the local well-posedness of it in fractional Sobolev spaces based on the decay estimates and H\"older type…

偏微分方程分析 · 数学 2024-07-02 Mingxuan He , Na Deng , Lu Zhang

A global solvability result of the Cauchy problem of the two-species Vlasov-Maxwell-Landau system near a given global Maxwellian is established by employing an approach different than that of [5]. Compared with that of [5], the minimal…

偏微分方程分析 · 数学 2013-09-26 Yuanjie Lei , Huijiang Zhao

In this paper, we establish the unconditional uniqueness of solutions to the cubic Gross-Pitaevskii hierarchy on $\mathbb{R}^d$ in a low regularity Sobolev type space. More precisely, we reduce the regularity $s$ down to the currently known…

偏微分方程分析 · 数学 2014-02-24 Younghun Hong , Kenneth Taliaferro , Zhihui Xie

This article is a guide to the literature on existence theorems for the Einstein equations which also draws attention to open problems in the field. The local in time Cauchy problem, which is relatively well understood, is treated first.…

广义相对论与量子宇宙学 · 物理学 2016-10-19 Alan D. Rendall

In this paper, we consider the Cauchy problem for the Hunter-Saxton (HS) equation on the line. Firstly, we establish the local well-posedness for the integral form of the (HS) equation by constructing some special spaces $E^s_{p,r}$, which…

偏微分方程分析 · 数学 2021-01-01 Weikui Ye , Zhaoyang Yin

In this paper, we establish the global well-posedness of the Cauchy problem for the Gross-Pitaevskii equation with an rotational angular momentum term in the space $\Real^2$.

偏微分方程分析 · 数学 2008-11-27 Chengchun Hao , Ling Hsiao , Hai-Liang li

We study the Cauchy problem for the $1$-d periodic fractional Schr\"odinger equation with cubic nonlinearity. In particular we prove local well-posedness in Sobolev spaces, for solutions evolving from rough initial data. In addition we show…

偏微分方程分析 · 数学 2013-12-19 S. Demirbas , M. B. Erdoğan , N. Tzirakis

This paper is concerned with the Cauchy problem of the modified Zakharov-Kuznetsov equation on $\mathbb{R}^d$. If $d=2$, we prove the sharp estimate which implies local in time well-posedness in the Sobolev space $H^s(\mathbb{R}^2)$ for $s…

偏微分方程分析 · 数学 2019-12-02 Shinya Kinoshita

Solutions to the Cauchy problem for the one-dimensional cubic nonlinear Schr\"odinger equation on the real line are studied in Sobolev spaces $H^s$, for $s$ negative but close to 0. For smooth solutions there is an {\em a priori} upper…

偏微分方程分析 · 数学 2007-05-23 Michael Christ , James Colliander , Terence Tao

This paper is concerned with the Cauchy problem of the $2$D Zakharov-Kuznetsov equation. We prove bilinear estimates which imply local in time well-posedness in the Sobolev space $H^s({\mathbb{R}}^2)$ for $s > -1/4$, and these are optimal…

偏微分方程分析 · 数学 2020-10-23 Shinya Kinoshita

The Cauchy problem for the Kadomtsev-Petviashvili-II equation (u_t+u_{xxx}+uu_x)_x+u_{yy}=0 is considered. A small data global well-posedness and scattering result in the scale invariant, non-isotropic, homogeneous Sobolev space \dot…

偏微分方程分析 · 数学 2010-11-03 Martin Hadac , Sebastian Herr , Herbert Koch

We study the Cauchy problem for a class of linear evolution equations of arbitrary order with coefficients depending both on time and space variables. Under suitable decay assumptions on the coefficients of the lower order terms for $|x|$…

偏微分方程分析 · 数学 2026-03-23 Marco Cappiello , Eliakim Cleyton Machado

We study necessary conditions and sufficient conditions for the existence of local-in-time solutions of the Cauchy problem for superlinear fractional parabolic equations. Our conditions are sharp and clarify the relationship between the…

偏微分方程分析 · 数学 2022-04-19 Yohei Fujishima , Kotaro Hisa , Kazuhiro Ishige , Robert Laister

It is well known that the Prandtl boundary layer equation is instable, and the well-posedness in Sobolev space for the Cauchy problem is an open problem. Recently, under the Oleinik's monotonicity assumption for the initial datum, [1] have…

偏微分方程分析 · 数学 2015-05-28 Weixi Li , Di Wu , Chao-Jiang Xu

In this paper, we are concerned with the Cauchy problem for the generalized KdV equation with random data and rough data. Firstly, when $s\in\mathbf{R}$, by using the initial value randomization technique introduced by Shen et al.…

偏微分方程分析 · 数学 2026-02-17 Xiangqian Yan , Yongsheng Li , Juan Huang , Jianhua Huang , Wei Yan

The Cauchy problem for the Chern-Simons-Higgs system in the (2+1)-dimensional Minkowski space in temporal gauge is locally well-posed for low regularity initial data improving a result of Huh. The proof uses the bilinear space-time…

偏微分方程分析 · 数学 2014-10-16 Hartmut Pecher

In this paper we investigate the well-posedness of the Cauchy problem for the wave equation for sums of squares of vector fields on compact Lie groups. We obtain the loss of regularity for solutions to the Cauchy problem in local Sobolev…

偏微分方程分析 · 数学 2015-10-16 Claudia Garetto , Michael Ruzhansky

The Cauchy problem for the Gross-Pitaevskii equation in three space dimensions is shown to have an unconditionally unique global solution for data of the form 1 + H^s for 5/6 < s < 1, which do not have necessarily finite energy. The proof…

偏微分方程分析 · 数学 2012-12-14 Hartmut Pecher

We study the Cauchy problem for the Gross-Pitaevskii equation with a nonlocal interaction potential of Hartree type in three space dimensions. If the potential is even and positive definite or a positive function and its Fourier transform…

偏微分方程分析 · 数学 2012-10-08 Hartmut Pecher