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We extend the inverse spectral transform for the conservative Camassa-Holm flow on the line to a class of initial data that requires strong decay at one endpoint but only mild boundedness-type conditions at the other endpoint. The latter…

偏微分方程分析 · 数学 2025-05-20 Jonathan Eckhardt , Aleksey Kostenko

An Inverse Scattering Method is developed for the Camassa-Holm equation. As an illustration of our approach the solutions corresponding to the reflectionless potentials are explicitly constructed in terms of the scattering data. The main…

可精确求解与可积系统 · 物理学 2007-05-23 Adrian Constantin , Vladimir S. Gerdjikov , Rossen I. Ivanov

In the context of the Cauchy problem for the Korteweg-de Vries equation we extend the inverse scattering transform to initial data that behave at plus infinity like a sum of Wigner-von Neumann type potentials with small coupling constants.…

数学物理 · 物理学 2022-05-04 Sergei Grudsky , Alexei Rybkin

We solve the inverse spectral problem associated with periodic conservative multi-peakon solutions of the Camassa-Holm equation. The corresponding isospectral sets can be identified with finite dimensional tori.

谱理论 · 数学 2022-10-25 Jonathan Eckhardt , Aleksey Kostenko

In this paper, we address the existence of global solutions to the Cauchy problem of the modified Camassa-Holm (mCH) equation, which is known as a model for the unidirectional propagation of shallow water waves. Based on the spectral…

偏微分方程分析 · 数学 2023-09-06 Yiling Yang , Engui Fan , Yue Liu

We introduce a generalized isospectral problem for global conservative multi-peakon solutions of the Camassa-Holm equation. Utilizing the solution of the indefinite moment problem given by M. G. Krein and H. Langer, we show that the…

谱理论 · 数学 2014-06-17 Jonathan Eckhardt , Aleksey Kostenko

We consider the Cauchy problem for the Korteweg--de Vries equation with real initial data $q$ that is both $L^1$ and $L^2$ summable and supported on (0,\infty). Using the left reflection coefficient and Hankel operators on the Hardy space…

数学物理 · 物理学 2026-04-17 Alexei Rybkin

We introduce a novel solution concept, denoted $\alpha$-dissipative solutions, that provides a continuous interpolation between conservative and dissipative solutions of the Cauchy problem for the two-component Camassa-Holm system on the…

偏微分方程分析 · 数学 2022-01-17 Katrin Grunert , Helge Holden , Xavier Raynaud

The initial-value problem for cylindrical gravitational waves is studied through the development of the inverse scattering method scheme. The inverse scattering transform in this case can be viewed as a transformation of the Cauchy data to…

广义相对论与量子宇宙学 · 物理学 2007-05-23 G. G. Varzugin

In this paper, we obtain the sharp uniqueness for an inverse $x$-source problem for a one-dimensional time-fractional diffusion equation with a zeroth-order term by the minimum possible lateral Cauchy data. The key ingredient is the unique…

偏微分方程分析 · 数学 2023-01-02 Zhiyuan Li , Yikan Liu , Masahiro Yamamoto

A non-local evolution equation of the Camassa-Holm type with dissipation is considered. The local well-posedness of the solutions of the Cauchy problem involving the equation is established via Kato's approach and the wave breaking scenario…

偏微分方程分析 · 数学 2020-05-11 Igor Leite Freire , Nazime Sales Filho , Ligia Corrêa de Souza , Carlos Eduardo Toffoli

We investigate the Cauchy problem on the cylinder, namely the semi-periodic problem where there is periodicity in the $x$-direction and decay in the $y$-direction, for the Kadomtsev-Petviashvili II equation by the inverse spectral transform…

偏微分方程分析 · 数学 2023-03-21 P. Kalamvokas , V. G. Papageorgiou , A. S. Fokas , L. -Y. Sung

We show existence of a global weak dissipative solution of the Cauchy problem for the two-component Camassa-Holm (2CH) system on the line with nonvanishing and distinct spatial asymptotics. The influence from the second component in the 2CH…

偏微分方程分析 · 数学 2022-01-17 Katrin Grunert , Helge Holden , Xavier Raynaud

A simple algorithm for the inverse scattering approach to the Camassa-Holm equation is presented.

数学物理 · 物理学 2007-05-23 Adrian Constantin , Jonatan Lenells

It is shown that a strong solution of the Camassa-Holm equation, initially decaying exponentially together with its spacial derivative, must be identically equal to zero if it also decays exponentially at a later time. In particular, a…

偏微分方程分析 · 数学 2007-05-23 A. Alexandrou Himonas , Gerard Misiołek , Gustavo Ponce , Yong Zhou

We show that the Cauchy problem for the Camassa-Holm equation has a unique, global, weak, and dissipative solution for any initial data $u_0\in H^1(\mathbb{R})$, such that $u_{0,x}$ is bounded from above almost everywhere. In particular, we…

偏微分方程分析 · 数学 2024-08-28 Katrin Grunert

In this paper we explore the weak solution of a time-dependent inverse source problem and inverse initial problem for $q$-analogue of the heat equation. As an over-determination condition we have used integral type condition on…

偏微分方程分析 · 数学 2022-12-15 Erkinjon Karimov , Serikbol Shaimardan

We consider the interior inverse problem associated with the global conservative {multipeakon} solution of the Camassa-Holm equation. Based on the inverse spectral theory on the half-line and the oscillation property of eigenfunctions, some…

谱理论 · 数学 2023-12-05 Tao Liu , Kang Lyu

We study a class of (conservative) low regularity solutions to the Camassa-Holm equation on the line by exploiting the classical moment problem (in the framework of generalized indefinite strings) to develop the inverse spectral transform…

偏微分方程分析 · 数学 2025-09-30 Xiang-Ke Chang , Jonathan Eckhardt , Aleksey Kostenko

In this paper, we prove that the existence and uniqueness of globally weak solutions to the Cauchy problem for the weakly dissipative Camassa-Holm equation in time weighted $H^1$ space. First, we derive an equivalent semi-linear system by…

偏微分方程分析 · 数学 2022-06-15 Zhiying Meng , Zhaoyang Yin
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