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arXiv 1312.7600math.AP
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一般二阶椭圆型方程延拓的增稳定性

Increasing stability of the continuation for general elliptic equations of second order

Victor Isakov

摘要:

给出了类似于Helmholtz方程的一般椭圆型偏微分方程Cauchy问题的稳定性估计.我们不对域或算子施加任何(伪)凸性假设。当波数/频率增加时,这些条件稳定性估计接近Lipschitz估计。我们将解决方案分为低频和高频部分,并仅对高频部分施加约束。我们给出了这个高频部分的对数界。证明使用能量估计和FBI变换。

英文摘要:

We give stability estimates in the Cauchy problem for general partial differential equation of the elliptic type similar to the Helmholtz equation. We do not impose any (pseudo)convexity assumptions on the domain or the operator. These conditional stability estimates are getting close to Lipschitz ones when the wave number/frequency is growing. We split solution into low and high frequency parts and impose constraints on the high frequency part only. We give logarithmic bounds on this high frequency part. Proofs use energy estimates and the FBI transform.

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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