Quasilinear elliptic problems with multivalued terms
Nikolaos Halidias, Νικόλαος Παπαγεωργίου · Czechoslovak Mathematical Journal · 2000
We study the quasilinear elliptic problem with multivalued terms.We consider the Dirichlet problem with a multivalued term appearing in the equation and a problem of Neumann type with a multivalued term appearing in the boundary condition. Our approach is based on Szulkin's critical point theory for lower semicontinuous energy functionals.