中文

与五阶 Korteweg-de Vries 方程相关的初边值问题的局部适定性与正则性

偏微分方程分析 2024-05-15 v1

摘要

在本工作中,我们证明了五阶 Korteweg-de Vries 方程的初边值问题(IBVP)\begin{align*} \left. \begin{array}{rlr} u_t+\partial_x^5 u+u\partial_x u&\hspace{-2mm}=0,&\quad x\in\mathbb R^+;\ t\in\mathbb R^+,\\ u(x,0)&\hspace{-2mm}=g(x),&\\ u(0,t)=h_1(t),\, \partial_x u(0,t)&\hspace{-2mm}=h_2(t),\,\partial_x^2 u(0,t)=h_3(t), \end{array} \right\} \end{align*} 是局部适定的,其中数据 gg, h1h_1, h2h_2, h3h_3 的取值满足 gHs(Rx+)g\in H^s(\mathbb R_x^+), 且 hj+1Hs+2j5(Rt+)h_{j+1}\in H^{\frac{s+2-j}5}(\mathbb R_t^+), j=0,1,2j=0,1,2, s[0,114){12,32,52}s\in [0,\frac{11}4)\setminus \{\frac12,\frac32,\frac52\}, 并满足以下相容性条件:\begin{align*} g(0)=h_1(0) \text{ if } \frac12<s<\frac32;\\ g(0)=h_1(0),\; g'(0)=h_2(0) \text{ if } \frac32<s<\frac52;\\ g(0)=h_1(0), \; g'(0)=h_2(0),\; g''(0)=h_3(0) \text{ if } \frac52<s<\frac{11}4. \end{align*} 此外,我们证明了解的非线性部分比初始数据 gg 更光滑。

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引用

@article{arxiv.2405.08757,
  title  = {Local well-posedness and regularity properties for an initial-boundary value problem associated to the fifth order Korteweg-de Vries equation},
  author = {Eddye Bustamante and José Jiménez Urrea and Jorge Mejía},
  journal= {arXiv preprint arXiv:2405.08757},
  year   = {2024}
}