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arXiv 0709.0103math.APmath-phmath.MP
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关于五阶Kadomtsev-Petviashvili I方程的低正则性

On the low regularity of the fifth order Kadomtsev-Petviashvili I equation

Wengu Chen, Junfeng Li, Changxing Miao

摘要:

我们考虑五阶Kadomtsev-Petviashvili I(KP-I)方程为$\partial_tu+α\partial_x^3u+\partial^5_xu+\partial_x^{-1}\partial_y^2u+uu_x=0,$,而$α\in \mathbb{R}$ .引入一个插值能量空间$E_s$来研究五阶KP-I方程的初值问题的适定性.我们得到了五阶KP-I方程在$0<s\leq1$中IVP的局部适定性。为了获得局部适定性,我们提出了一个双线性估计的Bourgain空间的框架内的能量空间。它主要取决于并元分解的Lahartz估计、五阶色散平滑效应和最大估计。关键词:五阶KP-I方程,Bourgain空间,并矢分解的Schmidhartz估计,色散平滑效应,极大估计。

英文摘要:

We consider the fifth order Kadomtsev-Petviashvili I (KP-I) equation as $\partial_tu+α\partial_x^3u+\partial^5_xu+\partial_x^{-1}\partial_y^2u+uu_x=0,$ while $α\in \mathbb{R}$. We introduce an interpolated energy space $E_s$ to consider the well-posedeness of the initial value problem (IVP) of the fifth order KP-I equation. We obtain the local well-posedness of IVP of the fifth order KP-I equation in $E_s$ for $0<s\leq1$. To obtain the local well-posedness, we present a bilinear estimate in the Bourgain space in the framework of the interpolated energy space. It crucially depends on the dyadic decomposed Strichartz estimate, the fifth order dispersive smoothing effect and maximal estimate. Key words: The fifth order KP-I equation, Bourgain space, Dyadic decomposed Strichartz estimate, Dispersive smoothing effect, Maximal estimate.

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