Abstract and Applied Analysis
Volume 2005 (2005), Issue 6, Pages 673-683
doi:10.1155/AAA.2005.673
  
     
          
          On the existence of nontrivial solutions for a fourth-order semilinear elliptic problem
          
            Aixia Qian1
             and Shujie Li2
          
          1Department of Mathematics, Qufu Normal University, Qufu Shandong 273165, China
          2Institute of Mathematics, Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100080, China
          
          Abstract
By means of Minimax theory, we study the existence of one nontrivial solution and multiple nontrivial solutions for a fourth-order semilinear elliptic problem with Navier boundary conditions.