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Spectral analysis of nonlinear operators. (English) Zbl 0268.47056
Lecture Notes in Mathematics. 346. Berlin-Heidelberg-New York: Springer-Verlag. 287 p. DM 26.00; $ 10.70 (1973).

MSC:
47Hxx Nonlinear operators and their properties
55M25 Degree, winding number
58E05 Abstract critical point theory (Morse theory, Lyusternik-Shnirel’man theory, etc.) in infinite-dimensional spaces
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