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arXiv 2201.09162math.AP
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临界Besov空间中广义Camassa-Holm方程局部适定性的一个新结果$B^{\frac{1}{p}}_{p,1},1\leq p<+\infty$

A new result for the local well-posedness of the generalized Camassa-Holm equations in critial Besov spaces $B^{\frac{1}{p}}_{p,1},1\leq p<+\infty$

Xi Tu, Zhaoyang Yin, Yingying Guo

摘要:

研究了临界Besov空间$B^{\frac{1}{p}}_{p,1}$中广义Camassa-Holm方程的局部适定性(存在性、唯一性和连续依赖性),改进了\cite{linb,tu-yin4}中的指标$s> \max\{\frac{1}{2},\frac{1}{p}\}$或$s=\frac{1}{p},\ p\in[1,2],\ r=1$.主要困难是证明唯一性,需要用到Moser型不等式。为了克服这一困难,我们利用拉格朗日坐标变换来获得唯一性。

英文摘要:

This paper is devoted to studying the local well-posedness (existence,uniqueness and continuous dependence) for the generalized Camassa-Holm equations in critial Besov spaces $B^{\frac{1}{p}}_{p,1}$ with $1\leq p<+\infty$, which improves the previous index $s> \max\{\frac{1}{2},\frac{1}{p}\}$ or $s=\frac{1}{p},\ p\in[1,2],\ r=1$ in \cite{linb,tu-yin4}. The main difficulty is to prove the uniqueness, which need to use the Moser-type inequality. To overcome the difficulty, we use the Lagrange coordinate transformation to obtain the uniqueness.

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