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arXiv 2202.06304math.AP
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Besov空间中两分量Novikov系统的不适定性

Ill_posedness for a two_component Novikov system in Besov space

Xing Wu, Min Li

摘要:

本文考虑了两分量Novikov系统在直线上的Cauchy问题。通过在$B_{p, \infty}^{s-1}(\mathbb{R})\times B_{p, \infty}^s(\mathbb{R})$中用$s>\max\{2+\frac{1}{p}, \frac{5}{2}\}$和$1\leq p \leq \infty$特殊构造初始数据$(ρ_0, u_0)$,证明了从$(ρ_0, u_0)$出发的任何能量有界解在$B_{p, \infty}^{s-1}(\mathbb{R})\times B_{p, \infty}^s(\mathbb{R})$度量下,当时间趋于零时不收敛回$(ρ_0, u_0)$,从而导致数据-解映射的不连续性和不适定性.

英文摘要:

In this paper, we consider the Cauchy problem for a two-component Novikov system on the line. By specially constructed initial data $(ρ_0, u_0)$ in $B_{p, \infty}^{s-1}(\mathbb{R})\times B_{p, \infty}^s(\mathbb{R})$ with $s>\max\{2+\frac{1}{p}, \frac{5}{2}\}$ and $1\leq p \leq \infty$, we show that any energy bounded solution starting from $(ρ_0, u_0)$ does not converge back to $(ρ_0, u_0)$ in the metric of $B_{p, \infty}^{s-1}(\mathbb{R})\times B_{p, \infty}^s(\mathbb{R})$ as time goes to zero, thus results in discontinuity of the data-to-solution map and ill-posedness.

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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