a1 Dipartimento di Matematica, Università di Torino, Via Carlo Alberto 10, 10123 Torino, Italy (email@example.com)
a2 SISSA, via Beirut 2–4, 34014 Trieste, Italy (firstname.lastname@example.org)
In this paper we obtain, for a semilinear elliptic problem in RN, families of solutions bifurcating from the bottom of the spectrum of −Δ. The problem is variational in nature and we apply a nonlinear reduction method that allows us to search for solutions as critical points of suitable functionals defined on finite-dimensional manifolds.
(Received January 22 2003)
(Accepted June 30 2003)