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arXiv 2604.00541math.SP
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不定标准系统直接谱问题

The direct spectral problem for indefinite canonical systems

Matthias Langer, Harald Woracek

AI总结:

本文研究了包含内奇点的不定标准系统,证明了在奇点处存在广义边界值,并利用这些值构造了单调矩阵,分离了哈密顿函数和与奇点相关的离散参数的贡献。

摘要:

对于包含内奇点的不定(庞特里亚金空间)标准系统,我们证明了在奇点处存在广义边界值,这些值用于制定界面条件。借助这些界面条件,我们构造了标准系统的单调矩阵,并将其表示为矩阵乘积,从而分离了哈密顿函数和与奇点相关的有限多个离散参数的贡献。

英文摘要:

For indefinite (Pontryagin space) canonical systems that contain an inner singularity we prove the existence of generalised boundary values at the singularity, which are used to formulate interface conditions. With the help of such interface conditions we construct the monodromy matrix of the canonical system and write it as a product of matrices, which separates the contributions of the Hamiltonian function and the finitely many discrete parameters that are associated with the singularity.

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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