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Information × Registration Number 2122U000952, Article popup.category Стаття Title popup.author Dobosevych O.Hryniv R popup.publication 09-01-2022 popup.source_user Український католицький університет popup.source https://hdl.handle.net/20.500.14570/3191 popup.publisher MDPI Description We study spectral properties of a wide class of differential operators with frozen arguments by putting them into a general framework of rank-one perturbation theory. In particular, we give a complete characterization of possible eigenvalues for these operators and solve the inverse spectral problem of reconstructing the perturbation from the resulting spectrum. This approach provides a unified treatment of several recent studies and gives a clear explanation and interpretation of the obtained results. popup.nrat_date 2024-12-02 Close