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In this paper, we study the existence of rotating and traveling-wave solutions for the generalized surface quasi-geostrophic (gSQG) equation. The solutions are obtained by maximization of the energy over the set of rearrangements of a fixed…

偏微分方程分析 · 数学 2021-03-09 Daomin Cao , Guolin Qin , Weicheng Zhan , Changjun Zou

In this paper, we construct smooth travelling counter-rotating vortex pairs with circular supports for the generalized surface quasi-geostrophic equation. These vortex pairs are analogues of the Lamb dipoles for the two-dimensional…

偏微分方程分析 · 数学 2023-05-10 Daomin Cao , Guolin Qin , Weicheng Zhan , Changjun Zou

We are concerned with the existence of periodic travelling-wave solutions for the generalized surface quasi-geostrophic (gSQG) equation(including incompressible Euler equation), known as von K\'arm\'an vortex street. These solutions are of…

偏微分方程分析 · 数学 2021-05-18 Daomin Cao , Guolin Qin , Weicheng Zhan , Changjun Zou

This paper deals with the existence of travelling wave solutions for a general one-dimensional nonlinear Schr\"odinger equation. We construct these solutions by minimizing the energy under the constraint of fixed momentum. We also prove…

偏微分方程分析 · 数学 2024-04-10 Jordan Berthoumieu

In this paper, we study the existence of global classical solutions to the generalized surface quasi-geostrophic equation. By using the variational method, we provide some new families of global classical solutions for to the generalized…

偏微分方程分析 · 数学 2021-04-23 Daomin Cao , Guolin Qin , Weicheng Zhan , Changjun Zou

We construct families of smooth travelling-wave solutions to the inviscid surface quasi-geostrophic equation (SQG). These solutions can be viewed as the equivalents for this equation of the vortex anti-vortex pairs in the context of the…

偏微分方程分析 · 数学 2017-05-22 Philippe Gravejat , Didier Smets

We study traveling wave solutions of an equation for surface waves of moderate amplitude arising as a shallow water approximation of the Euler equations for inviscid, incompressible and homogenous fluids. We obtain solitary waves of…

经典分析与常微分方程 · 数学 2013-12-06 Armengol Gasull , Anna Geyer

We consider the inviscid generalized surface quasi-geostrophic equation (gSQG) in a patch setting, where the parameter $\alpha \in (1,2)$. The cases $\alpha = 0$ and $\alpha = 1$ correspond to 2d Euler and SQG respectively, and our choice…

偏微分方程分析 · 数学 2017-06-01 Diego Córdoba , Javier Gómez-Serrano , Alexandru D. Ionescu

In this paper we study solitary traveling wave solutions to a damped shallow water system, which is in general quasilinear and of mixed type. We develop a small data well-posedness theory and prove that traveling wave solutions are a…

偏微分方程分析 · 数学 2024-07-24 Noah Stevenson , Ian Tice

This paper investigates the stability of traveling wave solutions to the free boundary Euler equations with a submerged point vortex. We prove that sufficiently small-amplitude waves with small enough vortex strength are conditionally…

偏微分方程分析 · 数学 2019-07-30 Kristoffer Varholm , Erik Wahlén , Samuel Walsh

This paper deals with front propagation dynamics of monostable equations with nonlocal dispersal in spatially periodic habitats. In the authors' earlier works, it is shown that a general spatially periodic monostable equation with nonlocal…

动力系统 · 数学 2014-12-09 Wenxian Shen , Aijun Zhang

In this paper, we study the orbital stability for a four-parameter family of periodic stationary traveling wave solutions to the generalized Korteweg-de Vries equation. In particular, we derive sufficient conditions for such a solution to…

偏微分方程分析 · 数学 2009-02-09 Mathew A. Johnson

We analyse the stability of periodic, travelling-wave solutions to the Kawahara equation and some of its generalizations. We determine the parameter regime for which these solutions can exhibit resonance. By examining perturbations of…

斑图形成与孤子 · 物理学 2018-06-25 O. Trichtchenko , B. Deconinck , R. Kollar

This paper investigates time-periodic solutions of both the surface quasi-geostrophic (SQG) equation and its generalized form (gSQG) within the more singular regime, focusing on the evolution of patch-type structures. Assuming the…

偏微分方程分析 · 数学 2025-10-28 Edison Cuba , Lucas C. F. Ferreira

For the generalized surface quasi-geostrophic equation $$\left\{ \begin{aligned} & \partial_t \theta+u\cdot \nabla \theta=0, \quad \text{in } \mathbb{R}^2 \times (0,T), \\ & u=\nabla^\perp \psi, \quad \psi = (-\Delta)^{-s}\theta \quad…

偏微分方程分析 · 数学 2020-09-01 Weiwei Ao , Juan Davila , Manuel del Pino , Monica Musso , Juncheng Wei

This article studies the vortex-wave system for the Surface Quasi-Geostrophic equation with parameter 0 < s < 1. We obtained local existence of classical solutions in H^4 under the standard ''plateau hypothesis'', H^2-stability of the…

偏微分方程分析 · 数学 2025-01-16 Dimitri Cobb , Martin Donati , Ludovic Godard-Cadillac

This paper aims to study the existence of asymmetric solutions for the two-dimensional generalized surface quasi-geostrophic (gSQG) equations of simply connected patches for $\alpha\in[1,2)$ in the whole plane, where $\alpha=1$ corresponds…

偏微分方程分析 · 数学 2022-12-13 Edison Cuba , Lucas C. F. Ferreira

We study stability of travelling wave solutions to Korteweg--de Vries type equations which has the fractional dispersion and integer-indices double power nonlinearities. It may depend on parity combinations of the two indices and the…

偏微分方程分析 · 数学 2025-04-30 Kaito Kokubu

This paper establishes suficient conditions for the orbital stability of one-parameter spatially periodic traveling-wave solutions for one-dimensional dispersive equations. Our method of proof combines known techniques with some new ideas.…

偏微分方程分析 · 数学 2020-04-28 Thiago Pinguello de Andrade , Ademir Pastor

In this paper, we investigate the stability and uniqueness of generalized traveling wave solutions of lattice Fisher-KPP equations with general time and space dependence. We first show the existence, uniqueness, and stability of strictly…

动力系统 · 数学 2019-01-11 Feng Cao , Wenxian Shen
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