Existence and multiplicity of solutions
β
Giovanni Anello
π
Article
π
2007
π
John Wiley and Sons
π
English
β 151 KB
## Abstract In this paper we establish an existence theorem of strong solutions to a perturbed Neumann problem of the type equation image In particular, our solutions take their values in a fixed real interval. This latter fact allows us to state a multiplicity result assuming on __f__ an oscilla