Mathematical Sciences Classification System
58Exx - Variational problems in infinite-dimensional spaces
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58E05Abstract critical point theory (Morse theory, Ljusternik-Schnirelman (Lyusternik-Shnirel'man) theory, etc.)
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58E07Abstract bifurcation theory
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58E09Group-invariant bifurcation theory
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58E10Applications to the theory of geodesics (problems in one independent variable)
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58E11Critical metrics
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58E12Applications to minimal surfaces (problems in two independent variables) [See also 49Q05]
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58E15Application to extremal problems in several variables; Yang-Mills functionals [See also 81T13], etc.
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58E17Pareto optimality, etc., applications to economics [See also 90C29]
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58E20Harmonic maps [See also 53C43], etc.
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58E25
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58E30Variational principles
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58E35Variational inequalities (global problems)
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58E40Group actions
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58E50Applications
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58E99None of the above, but in this section