Abstract and Applied Analysis
Volume 7 (2002), Issue 10, Pages 509-516
doi:10.1155/S1085337502207046
On an asymptotically linear elliptic Dirichlet problem
Zhitao Zhang
, Shujie Li
, Shibo Liu
and Weijie Feng
Institute of Mathematics, Academy of Mathematics and Systems Sciences, Academia Sinica, Beijing 100080, China
Abstract
Under very simple conditions, we prove the existence of one positive and one negative solution of an asymptotically linear elliptic boundary value problem. Even for the resonant case at infinity, we do not need to assume any more conditions to ensure the boundness of the (PS) sequence of the corresponding functional. Moreover, the proof is very simple.