arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1406.7798math.AP
收藏

各向异性wave equations强唯一延拓的定量估计

Quantitative estimates of strong unique continuation for anisotropic wave equations

Sergio Vessella

摘要:

本文的主要结果包括波动方程$\partial^2_{t}u-\mbox{div}\left(A(x)\nabla_x u\right)=0$解的一些定量估计。这样的估计意味着以下强的唯一连续性:(a)如果$u$是波动方程的解,并且$u$在$t$轴上的段$\{x_0\}\times J$上是平坦的,则$u$在$\{x_0\}\times J$的邻域中消失。(b)设u为上述波动方程在$Ω\times J$中的解,其在部分$Z\times J$上消失,其中$Z$是$\partialΩ$的一部分,并且$u$在段$\{x_0\}\times J$ $x_0\in Z$上平坦,则$u$在$\{x_0\}\times J$的邻域中消失。性质(a)已由G. Lebeau,Comm. Part. Diff. Equat. 24(1999),777-783。

英文摘要:

The main results of the present paper consist in some quantitative estimates for solutions to the wave equation $\partial^2_{t}u-\mbox{div}\left(A(x)\nabla_x u\right)=0$. Such estimates imply the following strong unique continuation properties: (a) if $u$ is a solution to the the wave equation and $u$ is flat on a segment $\{x_0\}\times J$ on the $t$ axis, then $u$ vanishes in a neighborhood of $\{x_0\}\times J$. (b) Let u be a solution of the above wave equation in $Ω\times J$ that vanishes on a a portion $Z\times J$ where $Z$ is a portion of $\partialΩ$ and $u$ is flat on a segment $\{x_0\}\times J$, $x_0\in Z$, then $u$ vanishes in a neighborhood of $\{x_0\}\times J$. The property (a) has been proved by G. Lebeau, Comm. Part. Diff. Equat. 24 (1999), 777-783.

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。

↑