International Journal of Mathematics and Mathematical Sciences
Volume 2004 (2004), Issue 45-48, Pages 2453-2472
doi:10.1155/S0161171204305119
  
     
          
          Multiple solutions to a nonlinear elliptic equation involving Paneitz type operators
          
            Abdallah El Hamidi
          
          Laboratoire de Mathématiques et Applications, Université de La Rochelle, avenue Michel Crépeau, La Rochelle 17000, France
          
          Abstract
This paper deals with an elliptic equation involving Paneitz type operators on compact Riemannian manifolds with concave-convex nonlinearities and a real parameter. Nonlocal and multiple existence results are established. Characteristic values of the real parameter are introduced and their role in the change of the energy sign and the existence of positive solutions are highlighted.