In this review, spectral results are described for a one-dimensional almost-periodic Schrödinger operator with two frequencies, one of them being much greater than the other. Bibliography: 36 titles.
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Translated from Zapiski Nauchnykh Seminarov POMI, Vol. 379, 2010, pp. 103–141.
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Fedotov, A.A. Adiabatic almost-periodic Schrödinger operators. J Math Sci 173, 299–319 (2011). https://doi.org/10.1007/s10958-011-0252-7
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DOI: https://doi.org/10.1007/s10958-011-0252-7