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arXiv 2001.07599math.APmath.DG
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实主型算子的反问题

Inverse problems for real principal type operators

Lauri Oksanen, Mikko Salo, Plamen Stefanov, Gunther Uhlmann

摘要:

考虑一般实主型微分算子的逆边值问题。第一个结果表明,Cauchy数据集唯一地决定了算子和低阶系数的次特征射线变换的散射关系。给出了一般算子的两种不同的边界确定方法,并证明了非线性实主型方程系数确定的全局唯一性结果。本文提出了一种统一的方法来处理输运和波动方程的反边界问题,并强调了奇性传播在解决相关的反问题的作用。

英文摘要:

We consider inverse boundary value problems for general real principal type differential operators. The first results state that the Cauchy data set uniquely determines the scattering relation of the operator and bicharacteristic ray transforms of lower order coefficients. We also give two different boundary determination methods for general operators, and prove global uniqueness results for determining coefficients in nonlinear real principal type equations. The article presents a unified approach for treating inverse boundary problems for transport and wave equations, and highlights the role of propagation of singularities in the solution of related inverse problems.

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