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Variational methods for non-differentiable functionals and their applications to partial differential equations. (English) Zbl 0487.49027


MSC:

49Q20 Variational problems in a geometric measure-theoretic setting
58E05 Abstract critical point theory (Morse theory, Lyusternik-Shnirel’man theory, etc.) in infinite-dimensional spaces
28A15 Abstract differentiation theory, differentiation of set functions
26B35 Special properties of functions of several variables, Hölder conditions, etc.
35J60 Nonlinear elliptic equations
35R05 PDEs with low regular coefficients and/or low regular data
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