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We provide two-sided pointwise estimates and uniform asymptotics of the solutions to the subcritical quasi-geostrophic equation with initial data in $L^{2/(\alpha-1)}(\mathbb{R}^2)$. Furthermore, we give upper bound of similar type for any…

Analysis of PDEs · Mathematics 2018-12-31 Tomasz Jakubowski , Grzegorz Serafin

We obtain almost-sure scattering for the cubic defocusing Schr{\"o}dinger equation in the Euclidean space {$\mathbb{R}^3$}, with randomized radially-symmetric initial data at some supercritical regularity scales. Since we make no smallness…

Analysis of PDEs · Mathematics 2021-10-22 Nicolas Camps

The paper is devoted to investigating the well-posedness, stability and large-time behavior near the hydrostatic balance for the 2D Boussinesq equations with partial dissipation. More precisely, the global well-posedness is obtained in the…

Analysis of PDEs · Mathematics 2024-07-30 Kyungkeun Kang , Jihoon Lee , Dinh Duong Nguyen

The Euler-Korteweg equations are a modification of the Euler equations that takes into account capillary effects. In the general case they form a quasi-linear system that can be recast as a degenerate Schr\"odinger type equation. Local…

Analysis of PDEs · Mathematics 2017-03-08 Corentin Audiard , Boris Haspot

In this paper we study the Cauchy problem for the elliptic and non-elliptic derivative nonlinear Schr\"odinger equations in higher spatial dimensions ($n\geq 2$) and some global well-posedness results with small initial data in critical…

Analysis of PDEs · Mathematics 2010-06-14 Baoxiang Wang , Yuzhao Wang

We prove global well-posedness for a cubic, non-local Schr\"odinger equation with radially-symmetric initial data in the critical space $L^2(\R^2)$, using the framework of Kenig-Merle and Killip-Tao-Visan. As a consequence, we obtain a…

Analysis of PDEs · Mathematics 2011-05-31 Stephen Gustafson , Eva Koo

In this paper we prove global well-posedness for the defocusing, energy-subcritical, nonlinear wave equation on $\mathbb{R}^{1 + 3}$ with initial data in a critical Besov space. No radial symmetry assumption is needed.

Analysis of PDEs · Mathematics 2021-08-09 Benjamin Dodson

In this paper, we prove the global regularity of smooth solutions to 2D surface quasi-geostrophic (SQG) equations with super-critical dissipation for a class of large initial data, where the velocity and temperature can be arbitrarily large…

Analysis of PDEs · Mathematics 2021-07-14 Huali Zhang , Jinlu Li

We construct a unique global solution to the Cauchy problem of the 3D Boltzmann equation for initial data around the Maxwellian in the spatially critical homogeneous Besov space…

Analysis of PDEs · Mathematics 2025-07-15 Jing Liu , Ling-Yun Shou , Jiang Xu

The present paper is dedicated to the global well-posedness for the 3D inhomogeneous incompressible Navier-Stokes equations, in critical Besov spaces without smallness assumption on the variation of the density. We aim at extending the work…

Analysis of PDEs · Mathematics 2016-08-09 Xiaoping Zhai , Zhaoyang Yin

This paper examines the question for global regularity for the Boussinesq equation with critical fractional dissipation. The main result states that the system admits global regular solutions for all (reasonably) smooth and decaying data,…

Analysis of PDEs · Mathematics 2016-10-18 Fazel Hadadifard , Atanas Stefanov

In this paper we prove a global result for the Schr\"odinger map problem with initial data with small Besov norm at critical regularity.

Analysis of PDEs · Mathematics 2017-01-31 Benjamin Dodson

This paper is dedicated to the study of the initial value problem for density dependent incompressible viscous fluids in $\R^{N}$ with $N\geq2$. We address the question of well-posedness for {\it large} data having critical Besov regularity…

Analysis of PDEs · Mathematics 2013-04-17 Boris Haspot

As a continuation of the previous work [40], in this paper we focus on the Cauchy problem of the two-dimensional (2D) incompressible Boussinesq equations with fractional Laplacian dissipation. We give an elementary proof of the global…

Analysis of PDEs · Mathematics 2016-01-27 Zhuan Ye , Xiaojing Xu

In this paper we prove global well-posedness of the critical surface quasigeostrophic equation on the two dimensional sphere building on some earlier work of the authors. The proof relies on an improving of the previously known pointwise…

Analysis of PDEs · Mathematics 2017-04-21 Diego Alonso-Oran , Antonio Cordoba , Angel D. Martinez

This paper establishes the global well-posedness of strong solutions to the nonhomogeneous magnetic B\'enard system with positive density at infinity in the whole space $\mathbb{R}^2$. More precisely, we obtain the global existence and…

Analysis of PDEs · Mathematics 2024-07-23 Jieqiong Liu

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 is a remark that by using an adaptation of the technique invented by A. Kiselev, F. Nazarov, and A. Voldberg, with a modified scaling argument, we can prove global regularity of the critical 2-D dissipative quasi-geostrophic equation…

Analysis of PDEs · Mathematics 2013-12-31 Sari Ghanem

In this note we prove global well-posedness and scattering for the conformal, defocusing, nonlinear wave equation with radial initial data in a critical Besov space. We also prove a polynomial bound on the scattering norm.

Analysis of PDEs · Mathematics 2022-06-29 Benjamin Dodson

We establish a regularity criterion for weak solutions of the dissipative quasi-geostrophic equations in mixed time-space Besov spaces.

Analysis of PDEs · Mathematics 2007-10-30 Hongjie Dong , Natasa Pavlovic