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A characterization of the spectrum of Hill’s operator. (English) Zbl 0343.34016

Translation from Mat. Sb., N. Ser. 97(139), 540–606 (1975; Zbl 0327.34021).

MSC:

34L40 Particular ordinary differential operators (Dirac, one-dimensional Schrödinger, etc.)
34B30 Special ordinary differential equations (Mathieu, Hill, Bessel, etc.)
47E05 General theory of ordinary differential operators
30D15 Special classes of entire functions of one complex variable and growth estimates
30C20 Conformal mappings of special domains
35Q99 Partial differential equations of mathematical physics and other areas of application

Citations:

Zbl 0327.34021
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