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arXiv 2103.00461math.AP
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阻尼双调和板方程源反问题的稳定性

Stability for an inverse source problem of the damped biharmonic plate equation

Peijun Li, Xiaohua Yao, Yue Zhao

摘要:

本文研究了三维阻尼双调和板方程源反问题的稳定性。稳定性估计由Lipschitz型数据差异和源函数的高频尾部组成,其中高频尾部随着频率的上界增加而减小。稳定性也表现出指数依赖于常数阻尼系数。分析采用Carleman估计和时间衰减估计的阻尼板波方程,以获得一个精确的可观测性界,并依赖于研究的共振自由区和上界的预解式的双调和算子相对于复杂的波数。

英文摘要:

This paper is concerned with the stability of the inverse source problem for the damped biharmonic plate equation in three dimensions. The stability estimate consists of the Lipschitz type data discrepancy and the high frequency tail of the source function, where the latter decreases as the upper bound of the frequency increases. The stability also shows exponential dependence on the constant damping coefficient. The analysis employs Carleman estimates and time decay estimates for the damped plate wave equation to obtain an exact observability bound and depends on the study of the resonance-free region and an upper bound of the resolvent of the biharmonic operator with respect to the complex wavenumber.

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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