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arXiv 1503.00093math.CAmath.AP
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关于二维散射变换的Plancherel恒等式

On Plancherel's identity for a two-dimensional scattering transform

Kari Astala, Daniel Faraco, Keith Rogers

摘要:

我们考虑了$\overline{\partial}$ -Dirac系统,Ablowitz和Fokas利用该系统将离焦的Davey-Stewartson系统转化为线性发展方程.伴随散射变换的非线性Plancherel恒等式是由Beals和Coifman对Schwartz函数建立的。宋延的有效性的身份职能属于$L^1(\mathbb{R}^2)\cap L^\infty(\mathbb{R}^2)$和布朗的$L^2(\mathbb{R}^2)$ -职能与足够小的规范。最近,Perry扩展到加权索伯列夫空间$H^{1,1}(\mathbb{R}^2)$,这里我们用$s\in(0,1)$扩展到$H^{s,s}(\mathbb{R}^2)$。

英文摘要:

We consider the $\overline{\partial}$-Dirac system that Ablowitz and Fokas used to transform the defocussing Davey-Stewartson system to a linear evolution equation. The nonlinear Plancherel identity for the associated scattering transform was established by Beals and Coifman for Schwartz functions. Sung extended the validity of the identity to functions belonging to $L^1(\mathbb{R}^2)\cap L^\infty(\mathbb{R}^2)$ and Brown to $L^2(\mathbb{R}^2)$-functions with sufficiently small norm. More recently, Perry extended to the weighted Sobolev space $H^{1,1}(\mathbb{R}^2)$ and here we extend to $H^{s,s}(\mathbb{R}^2)$ with $s\in(0,1)$.

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