Multiplicity of multi-bump type nodal solutions for a class of elliptic problems in ${\Bbb R}^N$

Claudianor O. Alves

DOI: http://dx.doi.org/10.12775/TMNA.2009.040

Abstract


In this paper, we establish existence and multiplicity of multi-bump
type nodal solutions for the following class of problems
$$
-\Delta u + (\lambda V(x)+ 1)u= f(u), \quad u> 0 \quad
\text{in } {\mathbb R}^N,
$$
where $N \geq 1$, $\lambda \in (0, \infty), f$ is a continuous function with
subcritical growth and $V\colon {\mathbb R}^N \rightarrow
{\mathbb R} $ is
a continuous function verifying some hypotheses.

Keywords


Variational methods; nodal solutions; elliptic problems

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