On Sums of Four Coprime Squares
Tom 61 / 2013
                    
                    
                        Bulletin Polish Acad. Sci. Math. 61 (2013), 109-111                    
                                        
                        MSC: Primary 11E25.                    
                                        
                        DOI: 10.4064/ba61-2-3                    
                                    
                                                Streszczenie
It is proved that all sufficiently large integers satisfying the necessary congruence conditions mod 24 are sums of four squares prime in pairs.
 
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            