Article Contents
Article Contents

Solutions of a nonlinear Schrödinger equation

• This paper deals with existence and multiplicity of solutions to the nonlinear Schrödinger equation of the type

$-\Delta u + (\lambda a(x) + a_0(x))u = f(x, u), u\in H^1(\mathbb R^N).$

We improve some previous results in two respects: we do not require $a_0$ to be positive on one hand, and allow $f(x, u)$ to be critical nonlinear on the other hand.

Mathematics Subject Classification: Primary: 35Q55; Secondary: 58E05.

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