An arithmetic criterion for the values of the exponential function
Tom 97 / 2001
                    
                    
                        Acta Arithmetica 97 (2001), 183-194                    
                                        
                        MSC: 11J82, 11J85.                    
                                        
                        DOI: 10.4064/aa97-2-6                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            