Multiple Solutions of
-Laplacian with Neumann and Robin Boundary Conditions for Both Resonance and Oscillation Problem !()
Department of Mathematics, Harbin Institute of Technology, Harbin 150025, China
Boundary Value Problems 2011, 2011:214289 doi:10.1155/2011/214289Published: 26 January 2011
We discuss Neumann and Robin problems driven by the -Laplacian with jumping nonlinearities. Using sub-sup solution method, Fucík spectrum, mountain pass theorem, degree theorem together with suitable truncation techniques, we show that the Neumann problem has infinitely many nonconstant solutions and the Robin problem has at least four nontrivial solutions. Furthermore, we study oscillating equations with Robin boundary and obtain infinitely many nontrivial solutions.