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The Harper equation: Monodromization without quasiclassics. (English. Russian original) Zbl 0866.34071

St. Petersbg. Math. J. 8, No. 2, 231-254 (1997); translation from Algebra Anal. 8, No. 2, 65-97 (1996).
See the review in Zbl 0849.34066.

MSC:

34L40 Particular ordinary differential operators (Dirac, one-dimensional Schrödinger, etc.)
81Q05 Closed and approximate solutions to the Schrödinger, Dirac, Klein-Gordon and other equations of quantum mechanics
34E20 Singular perturbations, turning point theory, WKB methods for ordinary differential equations

Citations:

Zbl 0849.34066
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