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We prove global well-posedness for low regularity data for the one dimensional quintic defocusing nonlinear Schr\"odinger equation. Precisely we show that a unique and global solution exists for initial data in the Sobolev space…

Analysis of PDEs · Mathematics 2016-08-14 Daniela De Silva , Nataša Pavlović , Gigliola Staffilani , Nikolaos Tzirakis

In this paper, we investigate the local-in-time well-posedness for the two-dimensional Prandtl equations in weighted Sobolev spaces under the Oleinik's monotonicity condition.Due to the loss of tangential derivative caused by vertical…

Analysis of PDEs · Mathematics 2018-11-30 Jincheng Gao , Daiwen Huang , Zheng-an Yao

In this paper, we study the global well-posedness and scattering of 3D defocusing, cubic Schr\"odinger equation. Recently, Dodson [arXiv:2004.09618] studied the global well-posedness in a critical Sobolev space $\dot{W}^{11/7,7/6}$. In this…

Analysis of PDEs · Mathematics 2024-10-10 Jia Shen , Yifei Wu

We consider the long time well-posedness of the Cauchy problem with large Sobolev data for a class of nonlinear Schr\"odinger equations (NLS) on $\mathbb{R}^2$ with power nonlinearities of arbitrary odd degree. Specifically, the method in…

Analysis of PDEs · Mathematics 2016-05-12 Nathan Totz

We study the global well-posedness of the two-dimensional defocusing fourth-order Schr\"odinger initial value problem with power type nonlinearities $\vert u\vert^{2k}u$ where $k$ is a positive integer. By using the $I$-method, we prove…

Analysis of PDEs · Mathematics 2023-08-14 Engin Başakoğlu , Barış Yeşiloğlu , Oğuz Yılmaz

In this paper we continue our study [DSS20] of the nonlinear Schr\"odinger equation (NLS) with bounded initial data which do not vanish at infinity. Local well-posedness on $\mathbb{R}$ was proved for real analytic data. Here we prove…

Analysis of PDEs · Mathematics 2021-08-11 Benjamin Dodson , Avraham Soffer , Thomas Spencer

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…

Analysis of PDEs · Mathematics 2020-10-23 Shinya Kinoshita

In this article, we prove the global well-posedness in the critical Sobolev space $H_{rad}^2\left(\mathbb{R}^2\right) \times H_{rad}^1 \left(\mathbb{R}^2\right)$ for the radial time-like extremal hypersurface equation in $\left(1+3\right)$-…

Analysis of PDEs · Mathematics 2023-09-19 Sheng Wang , Yi Zhou

We study the global well-posedness theory for the Schr\"odinger Maps equation. We work in $n+1$ dimensions, for $n \geq 3$, and prove a local well-posedness for small initial data in $\dot{B}^{\frac{n}{2}}_{2,1}$.

Analysis of PDEs · Mathematics 2007-05-23 Ioan Bejenaru

In this paper, the global well-posedness of semirelativistic equations with a power type nonlinearity on Euclidean spaces is studied. In two dimensional $H^s$ scaling subcritical case with $1 \leq s \leq 2$, the local well-posedness follows…

Analysis of PDEs · Mathematics 2016-11-30 Kazumasa Fujiwara , Vladimir Georgiev , Tohru Ozawa

We consider a Prandtl model derived from MHD in the Prandtl-Hartmann regime that has a damping term due to the effect of the Hartmann boundary layer. A global-in-time well-posedness is obtained in the Gevrey function space with the optimal…

Analysis of PDEs · Mathematics 2022-08-15 Wei-Xi Li , Rui Xu , Tong Yang

The L^2 -critical defocusing nonlinear Schrodinger initial value problem on R^d is known to be locally well-posed for initial data in L^2. Hamiltonian conservation and the pseudoconformal transformation show that global well-posedness holds…

Analysis of PDEs · Mathematics 2010-01-09 P. Blue , J. Colliander

We show the local in time well-posedness of the Cauchy problem for the Kadomtsev-Petviashvili II equation for initial data in the non-isotropic Sobolev space H^{s_1,s_2}(R^2) with s_1 > -1/2 and s_2 \geq 0. On the H^{s_1,0}(R^2) scale this…

Analysis of PDEs · Mathematics 2007-05-23 M. Hadac

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…

Analysis of PDEs · Mathematics 2019-12-02 Shinya Kinoshita

In this paper, we are concerned with the local and global existence for the stochastic Prandtl equation in two and three dimensions, which governs the velocity field inside the boundary layer that appears in the inviscid limit of the…

Analysis of PDEs · Mathematics 2024-08-09 Ya-Guang Wang , Meng Zhao

We study global well-posedness for the Kadomtsev-Petviashvili II equation in three space dimensions with small initial data. The crucial points are new bilinear estimates and the definition of the function spaces. As by-product we obtain…

Analysis of PDEs · Mathematics 2017-04-11 Herbert Koch , Junfeng Li

This paper is concerned with existence, uniqueness and stability of the solution for the 3D Prandtl equation in a polynomial weighted Sobolev space. The main novelty of this paper is to directly prove the long time well-posedness to 3D…

Analysis of PDEs · Mathematics 2025-08-26 Yuming Qin , Junchen Liu

In this note we prove global well-posedness for the defocusing, cubic nonlinear Schr{\"o}dinger equation with initial data lying in a critical Sobolev space.

Analysis of PDEs · Mathematics 2020-04-22 Benjamin Dodson

In this paper, we study global well-posedness of the two-dimensional Keller-Segel model in Lebesgue space and Sobolev space. Recall that in the paper "Existence and uniqueness theorem on mild solutions to the Keller-Segel system in the…

Analysis of PDEs · Mathematics 2012-10-15 Chao Deng , Congming Li

The Zakharov system in dimension $d\leqslant 3$ is shown to be locally well-posed in Sobolev spaces $H^s \times H^l$, extending the previously known result. We construct new solution spaces by modifying the $X^{s,b}$ spaces, specifically by…

Analysis of PDEs · Mathematics 2022-05-05 Akansha Sanwal
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