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常微分方程的性质C及其在反问题中的应用

Property C for ODE and applications to inverse problems

A. G. Ramm

AI总结:

本文证明了薛定谔算子的性质C(齐次线性微分方程解乘积的完备性),并将其应用于反问题和逆散射问题,揭示了固定能量相移对紧支撑势的唯一确定,并指出Newton-Sabatier方法本质上是参数拟合而非反演方法。

摘要:

性质C表示齐次线性微分方程解乘积的完备性。对于薛定谔算子,性质C在各种形式下得到证明。给出了该性质在反问题和逆散射问题中的许多应用。展示了固定能量相移的哪一部分唯一确定一个紧支撑势。证明了Newton-Sabatier方法并非真正的反演方法,而是一种参数拟合过程,并证明该过程无法恢复一般势,特别是任何在正实轴邻域内非解析的势。

英文摘要:

Property C stands for completeness of the set of products of solutions to homogeneous linear differential equations. property C is proved in various formulations for Schrödinger operators. Many applications of this property to inverse problems and inverse scattering problems are given. It is shown what part of the fixed-energy phase shifts determines a compactly supported potential uniquely. It is shown that the Newton-Sabatier method is not really an inversion method but a parameter-fitting procedure and it is proved that this procedure cannot recover a generic potential, in particular, any potential which is not analytic in a neighborhood of the positive real axis.

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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