Stability of the determination of a coefficient for wave equations in an infinite waveguide

Stability of the determination of a coefficient for wave equations in an infinite waveguide
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无限波导中波动方程系数确定的稳定性

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2020
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Yavar Kian
Yavar Kian
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作者:
Yavar Kian

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我们考虑了无界波导Ω = ω × R中波动方程<$2 t u − <$u + q(x)u = 0的Dirichlet初边值问题中由边界观测确定电势q的反问题的稳定性,其中ω是R2的有界光滑区域。观测由波动方程的Dirichlet到Neumann映射给出。我们证明了一个Hölder稳定性估计,在确定q从Dirichlet到Neumann映射。此外,假设两个电势之间的差距在Ω的一个固定的有界子集中最大,我们将这个结果推广到在侧边界(0,T)× Ω的一个有界子集上测量的相同的反问题.波动方程2系数确定的稳定性
We consider the stability in the inverse problem consisting in the determination of an electric potential q, appearing in a Dirichlet initial-boundary value problem for the wave equation ∂2 t u − ∆u + q(x)u = 0 in an unbounded wave guide Ω = ω × R with ω a bounded smooth domain of R2, from boundary observations. The observation is given by the Dirichlet to Neumann map associated to a wave equation. We prove a Hölder stability estimate in the determination of q from the Dirichlet to Neumann map. Moreover, provided that the gap between two electric potentials rich its maximum in a fixed bounded subset of Ω, we extend this result to the same inverse problem with measurements on a bounded subset of the lateral boundary (0, T ) × ∂Ω. Stability of the determination of a coefficient for the wave equation 2
Ikehata, M.:“无限板中的逆电导率问题”逆问题。
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