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An approximate method of finding critical points of even functionals. (English) Zbl 0374.47034

MSC:
47H99 Nonlinear operators and their properties
57R70 Critical points and critical submanifolds in differential topology
58E15 Variational problems concerning extremal problems in several variables; Yang-Mills functionals
58C25 Differentiable maps on manifolds
58E05 Abstract critical point theory (Morse theory, Lyusternik-Shnirel’man theory, etc.) in infinite-dimensional spaces
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