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Related papers: Two dimensional gravity waves at low regularity I:…

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We consider the gravity-capillary water waves equations for a bi-dimensional fluid with a periodic one-dimensional free surface. We prove a rigorous reduction of this system to Birkhoff normal form up to cubic degree. Due to the possible…

Analysis of PDEs · Mathematics 2019-05-15 Massimiliano Berti , Roberto Feola , Luca Franzoi

In this article we consider irrotational gravity water waves with finite bottom. Our goal is two-fold. First, we represent the equations in holomorphic coordinates and discuss the local well-posedness of the problem in this context. Second,…

Analysis of PDEs · Mathematics 2016-07-12 Benjamin Harrop-Griffiths , Mihaela Ifrim , Daniel Tataru

Our goal in this paper is to initiate the rigorous investigation of wave turbulence and derivation of wave kinetic equations (WKE) for water waves models. This problem has received intense attention in recent years in the context of…

Analysis of PDEs · Mathematics 2025-04-22 Yu Deng , Alexandru D. Ionescu , Fabio Pusateri

We are interested in the system of gravity water waves equations without surface tension. Our purpose is to study the optimal regularity thresholds for the initial conditions. In terms of Sobolev embeddings, the initial surfaces we consider…

Analysis of PDEs · Mathematics 2014-04-17 Thomas Alazard , Nicolas Burq , Claude Zuily

We consider the two-dimensional deep gravity-capillary water waves with point vortices. We first formulate the question in the holomorphic coordinates. Then, we derive an a priori energy estimate for water waves, and show that the water…

Analysis of PDEs · Mathematics 2025-04-28 Lizhe Wan

In this paper we derive a new formulation of the water waves equations with vorticity that generalizes the well-known Zalkarov-Craig-Sulem formulation used in the irrotational case. We prove the local well-posedness of this formulation, and…

Analysis of PDEs · Mathematics 2014-02-04 Angel Castro , David Lannes

The two dimensional gravity water wave problem concerns the motion of an incompressible fluid occupying half the 2D space and flowing under its own gravity. In this paper we study long-term regularity of solutions evolving from small but…

Analysis of PDEs · Mathematics 2022-06-22 Fan Zheng

By establishing a sharp Strichartz estimate for the velocity and density, we prove the local well-posedness of solutions for the Cauchy problem of two-dimensional compressible Euler equations, where the initial velocity, density, and…

Analysis of PDEs · Mathematics 2025-05-27 Huali Zhang

We study the low regularity well-posedness for Cauchy problem of 3D relativistic Euler equations. Firstly, we introduce a new decomposition for relativistic velocity and derive new transport equations for vorticity, which both play a…

Analysis of PDEs · Mathematics 2024-11-05 Huali Zhang

We provide the first proof of local well-posedness for the two-dimensional gravity water wave equations with spatially quasi-periodic initial conditions. We represent the solution using holomorphic coordinates, which are equivalent to a…

Analysis of PDEs · Mathematics 2026-03-26 Mihaela Ifrim , Jon Wilkening , Xinyu Zhao

We establish the local existence and uniqueness of solutions to the two-dimensional compressible Euler equations with initial velocity $\bv_0$, logarithmic density $\rho_0$, and specific vorticity \(w_0\), which satisfy $(\bv_0, \rho_0,…

Analysis of PDEs · Mathematics 2025-12-10 Huali Zhang

We prove Strichartz estimates for gravity water waves, in arbitrary dimension and in fluid domains with general bottoms. We consider rough solutions such that, initially, the first order derivatives of the velocity field are not controlled…

Analysis of PDEs · Mathematics 2013-08-08 Thomas Alazard , Nicolas Burq , Claude Zuily

We consider in this article the system of (pure) gravity water waves in any dimension and in fluid domains with general bottoms. The unique solvability of the problem was established by Alazard-Burq-Zuily [Invent. Math, 198 (2014), no. 1,…

Analysis of PDEs · Mathematics 2016-06-09 Quang-Huy Nguyen

The goal of this monograph is to prove that any solution of the Cauchy problem for the capillarity-gravity water waves equations, in one space dimension, with periodic, even in space, initial data of small size $\epsilon$, is almost…

Analysis of PDEs · Mathematics 2017-02-28 Massimiliano Berti , Jean-Marc Delort

We prove global existence and modified scattering property for the solutions of the $2D$ gravity water waves system in the infinite depth setting for a class of initial data, which is only required to be small above the level…

Analysis of PDEs · Mathematics 2016-11-17 Xuecheng Wang

We study stationary capillary-gravity waves in a two-dimensional body of water that rests above a flat ocean bed and below vacuum. This system is described by the Euler equations with a free surface. Our main result states that there exist…

Analysis of PDEs · Mathematics 2020-06-18 Mats Ehrnström , Samuel Walsh , Chongchun Zeng

This paper establishes the conditional orbital stability of fully localized solitary waves for the three-dimensional capillary-gravity water wave problem in finite depth under strong surface tension. The waves, constructed via a…

Analysis of PDEs · Mathematics 2025-11-11 Changfeng Gui , Shanfa Lai , Yong Liu , Juncheng Wei , Wen Yang

We consider gravity water waves in two space dimensions, with finite or infinite depth. Assuming some uniform scale invariant Sobolev bounds for the solutions, we prove local energy decay (Morawetz) estimates globally in time. Our result is…

Analysis of PDEs · Mathematics 2018-06-25 Thomas Alazard , Mihaela Ifrim , Daniel Tataru

In this paper, we first establish a kind of weighted space-time $L^2$ estimate, which belongs to Keel-Smith-Sogge type estimates, for perturbed linear elastic wave equations. This estimate refines the corresponding one established by the…

Analysis of PDEs · Mathematics 2018-02-23 Kunio Hidano , Dongbing Zha

We consider the gravity-capillary waves in any dimension and in fluid domains with general bottoms. Using the paradiferential reduction established in the companion paper, we prove Strichartz estimates for solutions to this problem, at a…

Analysis of PDEs · Mathematics 2015-08-03 Thibault de Poyferre , Quang Huy Nguyen