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We study the local well-posedness in the Sobolev space H^s for the modified Korteweg-de Vries (mKdV) equation on the real line. Kenig-Ponce-Vega \cite{KPV2} and Christ-Colliander-Tao established that the data-to-solution map fails to be…

Analysis of PDEs · Mathematics 2012-07-31 Michael Christ , Justin Holmer , Daniel Tataru

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.…

Analysis of PDEs · Mathematics 2026-02-17 Xiangqian Yan , Yongsheng Li , Juan Huang , Jianhua Huang , Wei Yan

(Due to the limit on the number of characters for an abstract set by arXiv, the full abstract can not be displayed here. See the abstract in the paper.) We study dispersive equations with a time non-homogeneous modulation acting on the…

Analysis of PDEs · Mathematics 2024-10-22 Khalil Chouk , Massimiliano Gubinelli , Guopeng Li , Jiawei Li , Tadahiro Oh

We consider the defocusing supercritical generalized Korteweg-de Vries (gKdV) equation $\partial_t u+\partial_x^3u-\partial_x(u^{k+1})=0$, where $k>4$ is an even integer number. We show that if the initial data $u_0$ belongs to $H^1$ then…

Analysis of PDEs · Mathematics 2021-08-26 Luiz G. Farah , Felipe Linares , Ademir Pastor , Nicola Visciglia

The purpose of this paper is to study local and global well-posedness of initial value problem for generalized Korteweg-de Vries (gKdV) equation in ^L^r. We show (large data) local well-posedness, small data global well-posedness, and small…

Analysis of PDEs · Mathematics 2016-07-06 Satoshi Masaki , Jun-ichi Segata

We study the complex-valued modified Korteweg-de Vries equation (mKdV) on the circle. We first consider the real-valued setting and show global well-posedness of the (usual) renormalized mKdV equation in the Fourier-Lebesgue spaces. In the…

Analysis of PDEs · Mathematics 2020-12-29 Andreia Chapouto

We prove that the Korteweg-de Vries initial-value problem is globally well-posed in $H^{-3/4}(\R)$ and the modified Korteweg-de Vries initial-value problem is globally well-posed in $H^{1/4}(\R)$. The new ingredient is that we use directly…

Analysis of PDEs · Mathematics 2010-07-27 Zihua Guo

We study stochastic Korteweg - de Vries equation driven by L\'evy noise consisting of the compensated time homogeneous Poisson random measure and a cylindrical Wiener process. We prove the existence of a martingale solution to the equation…

Probability · Mathematics 2018-03-28 Anna Karczewska , Maciej Szczeciński

In a recent paper, Kenig, Ponce and Vega study the low regularity behavior of the focusing nonlinear Schr\"odinger (NLS), focusing modified Korteweg-de Vries (mKdV), and complex Korteweg-de Vries (KdV) equations. Using soliton and breather…

Analysis of PDEs · Mathematics 2007-05-23 Michael Christ , James Colliander , Terence Tao

We prove the local well-posedness of the periodic stochastic Korteweg-de Vries equation with the additive space-time white noise. In order to treat low regularity of the white noise in space, we consider the Cauchy problem in the Besov-type…

Analysis of PDEs · Mathematics 2010-07-13 Tadahiro Oh

We consider two types of the generalized Korteweg - de Vries equation, where the nonlinearity is given with or without absolute values, and, in particular, including the low powers of nonlinearity, an example of which is the Schamel…

Analysis of PDEs · Mathematics 2023-01-18 Isaac Friedman , Oscar Riaño , Svetlana Roudenko , Diana Son , Kai Yang

This paper addresses the problem of global well-posedness of a coupled system of Korteweg-de Vries equations, derived by Majda and Biello in the context of nonlinear resonant interaction of Rossby waves, in a periodic setting in homogeneous…

Analysis of PDEs · Mathematics 2013-10-07 Yanqiu Guo , Konrad Simon , Edriss S. Titi

We study the Cauchy problem for the generalized KdV and one-dimensional fourth-order derivative nonlinear Schr\"odinger equations, for which the global well-posedness of solutions with the small rough data in certain scaling limit of…

Analysis of PDEs · Mathematics 2023-01-12 Yufeng Lu

We consider the Cauchy problem for a generalized KdV equation \begin{eqnarray*} u_{t}+\partial_{x}^{3}u+u^{7}u_{x}=0, \end{eqnarray*} with random data on \R. Kenig, Ponce, Vega(Comm. Pure Appl. Math.46(1993), 527-620)proved that the problem…

Analysis of PDEs · Mathematics 2017-09-05 Wei Yan , Jinqiao Duan , Jianhua Huang

We prove that the Cauchy problem of the mass-critical generalized KdV equation is globally well-posed in Sobolev spaces $H^s(\R)$ for $s>6/13$. Of course, we require that the mass is strictly less than that of the ground state in the…

Analysis of PDEs · Mathematics 2020-05-08 Changxing Miao , Shuanglin Shao , Yifei Wu , Guixiang Xu

In this paper, we investigate the Cauchy problem for the coupled generalized Korteweg-de Vries system driven by white noise. We prove local well-posedness for data in $ H^{s} \times H^{s},$ with $ s>1/2$. The key ingredients that we used in…

Analysis of PDEs · Mathematics 2025-10-31 Aissa Boukarou

We prove global well-posedness of the fifth-order Korteweg-de Vries equation on the real line for initial data in $H^{-1}(\mathbb{R})$. By comparison, the optimal regularity for well-posedness on the torus is known to be…

Analysis of PDEs · Mathematics 2019-12-04 Bjoern Bringmann , Rowan Killip , Monica Visan

We consider the defocusing generalized KdV equations on the circle. In particular, we construct global-in-time solutions with initial data distributed according to the Gibbs measure and show that the law of the random solutions, at any…

Analysis of PDEs · Mathematics 2016-04-27 Tadahiro Oh , Geordie Richards , Laurent Thomann

We prove that the Cauchy problem for the KP-I equation is globally well-posed for initial data which are localized perturbations (of arbitrary size) of a non-localized (i.e. not decaying in all directions) traveling wave solution (e.g. the…

Analysis of PDEs · Mathematics 2009-11-11 Luc Molinet , Jean-Claude Saut , Nikolay Tzvetkov

Multi-kink solutions of the defocusing, modified Korteweg-de Vries equation (mKdV) found by Grosse are shown to be globally $H^1$-stable. Stability in the one-kink case was previously established by Zhidkov, and Merle-Vega. The proof uses…

Analysis of PDEs · Mathematics 2011-08-10 Claudio Muñoz