Stationary and evolution problems
Semilinear elliptic problems
Systems of partial differential equations and nonlinear elliptic equations
Nonlinear elliptic partial differential equations and systems
Variational and topological methods for partial differential equation
EXISTENCE AND MULTIPLICITY OF SOLUTIONS FOR ELLIPTIC PROBLEMS WITH QUADRATIC GROW...
Hamiltonian systems of elliptic equations and fourth-order elliptic equations
Using variational methods, we prove a nonexistence and multiplicity result of positive solutions for a class of elliptic systems involving a parameter. (AU)