Syllabus
The goal is a presentation of fundamental techniques used for nonlinear differential equations and inequalities both on the level of abstract mappings in Banach spaces and on the typical cases derived as weak formulations of steady-state boundary-value or unilateral problems or free-boundary problems for quasi- or semi-linear elliptic partial differential equations. In particular, methods of monotonicity and compactness, variational methods for problem with (possibly nonsmooth) potentials, Galerkin's method, and the penalty method will be addressed, as well as systems of nonlinear differential equations with definite applications in (thermo)mechanics of continua or other areas of physics.
Exercises will involve modifications of problems presented in the main course.
Annotation
Pseudomonotone and monotone operators, set-valued mappings and applications to nonlinear elliptic partial differential equations and inequalities.