On the critical Neumann problem with lower order perturbations
Jan H. Chabrowski, Bernhard Ruf · Colloquium Mathematicum · 2007
We investigate the solvability of the Neumann problem (1.1) involving a critical Sobolev exponent and lower order perturbations in bounded domains. Solutions are obtained by min max methods based on a topological linking. A nonlinear perturbation of a low