Generalized Nehari manifold and semilinear Schrödinger equation with weak monotonicity condition on the nonlinear term

We study the Schrodinger equations -Delta u + V (x) u = f( x, u) in R-N and -Delta u -lambda u = f( x, u) in a bounded domain Omega subset of R-N. We assume that f is superlinear but of subcritical ...