arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0910.5895math.AP
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五阶Korteweg-de Vries方程的整体适定性与I-方法

Global well-posedness and I-method for the fifth-order Korteweg-de Vries equation

Wengu Chen, Zihua Guo

摘要:

利用$\bar{F}^s$型空间\cite{GuoKdV}的思想证明了Kawahara方程在$H^{-7/4}$中是局部适定的.其次,利用“I-方法”\cite{I-method}的思想,证明了$H^s$对$s\geq -7/4$的整体适定性.与KdV方程相比,Kawahara方程具有较少的对称性,如不存在不变标度变换和不完全可积。新的因素是我们需要处理一些新的困难,这些困难是由这个方程缺乏对称性引起的。

英文摘要:

We prove that the Kawahara equation is locally well-posed in $H^{-7/4}$ by using the ideas of $\bar{F}^s$-type space \cite{GuoKdV}. Next we show it is globally well-posed in $H^s$ for $s\geq -7/4$ by using the ideas of "I-method" \cite{I-method}. Compared to the KdV equation, Kawahara equation has less symmetries, such as no invariant scaling transform and not completely integrable. The new ingredient is that we need to deal with some new difficulties that are caused by the lack symmetries of this equation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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