Saddle points and Lagrange multipliers in Banach spaces
نویسندگان
چکیده
Constrained extremal points of a potential can be represented as saddle Lagrangian. We prove existence such for nonquadratic potentials in Banach spaces under nonlinear constraints. then apply these results to the so-called mixed formulation elliptic partial differential equations.
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ژورنال
عنوان ژورنال: Discrete and Continuous Dynamical Systems - Series S
سال: 2023
ISSN: ['1937-1632', '1937-1179']
DOI: https://doi.org/10.3934/dcdss.2023179