## Osaka Journal of Mathematics

### Existence, nonexistence and multiplicity of positive solutions for parametric nonlinear elliptic equations

#### Abstract

We consider a parametric nonlinear elliptic equation driven by the Dirichlet $p$-Laplacian. We study the existence, nonexistence and multiplicity of positive solutions as the parameter $\lambda$ varies in $\mathbb{R}^{+}_{0}$ and the potential exhibits a $p$-superlinear growth, without satisfying the usual in such cases Ambrosetti--Rabinowitz condition. We prove a bifurcation-type result when the reaction has ($p-1$)-sublinear terms near zero (problem with concave and convex nonlinearities). We show that a similar bifurcation-type result is also true, if near zero the right hand side is ($p-1$)-linear.

#### Article information

Source
Osaka J. Math., Volume 51, Number 1 (2014), 179-203.

Dates
First available in Project Euclid: 8 April 2014

Permanent link to this document
https://projecteuclid.org/euclid.ojm/1396966231

Mathematical Reviews number (MathSciNet)
MR3192538

Zentralblatt MATH identifier
1295.35236

#### Citation

Iannizzotto, Antonio; Papageorgiou, Nikolaos S. Existence, nonexistence and multiplicity of positive solutions for parametric nonlinear elliptic equations. Osaka J. Math. 51 (2014), no. 1, 179--203. https://projecteuclid.org/euclid.ojm/1396966231

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