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Essential spectral singularities and the spectral expansion for the Hill operator

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  • In this paper we investigate the spectral expansion for the one-dimensional Schrodinger operator with a periodic complex-valued potential. For this we consider in detail the spectral singularities and introduce new concepts as essential spectral singularities and singular quasimomenta.

    Mathematics Subject Classification: 47E05, 34L05.

    Citation:

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