TY: JOUR
T1 - On resonant Neumann problems: Multiplicity of solutions
A1 - Papageorgiou, Nikolaos S.
A1 - Santos Coelho Rodrigues, Ana Isabel
A1 - Staicu, Vasile
N2 - We consider a semilinear Neumann problem with an asymptotically linear reaction term. We assume that resonance occurs at infinity. Using variational methods based on the critical point theory, together with the reduction technique and Morse theory, we show that the problem has at least four nontrivial smooth solutions.
UR - https://ria.ua.pt/handle/10773/6597
Y1 - 2011
PB - Elsevier