A unified approach for multiple constant sign and nodal solutions

Abstract

We consider a nonlinear elliptic equation driven by the $p$-Laplacian with Dirichlet boundary condition. Using variational techniques, combined with the method of upper-lower solutions and suitable truncation arguments, we establish the existence of at least six nontrivial solutions: two positive, two negative and two nodal (sign-changing) solutions. Our framework of analysis incorporates both coercive and $p-1$-superlinear problems. Also, the result on multiple constant sign solution incorporates the case of concave-convex nonlinearities.

Article information

Source
Adv. Differential Equations, Volume 12, Number 12 (2007), 1363-1392.

Dates
First available in Project Euclid: 18 December 2012