Weak compactness of solutions for fourth order elliptic systems with critical growth
Volume 214 / 2013
                    
                    
                        Studia Mathematica 214 (2013), 137-156                    
                                        
                        MSC: Primary 35J48; Secondary 35J60, 58E20.                    
                                        
                        DOI: 10.4064/sm214-2-3                    
                                    
                                                Abstract
We consider a class of fourth order elliptic systems which include the Euler–Lagrange equations of biharmonic mappings in dimension $4$ and we prove that a weak limit of weak solutions to such systems is again a weak solution to a limit system.
 
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            