On successors in cardinal arithmetic
Volume 78 / 1973
                    
                    
                        Fundamenta Mathematicae 78 (1973), 7-21                    
                                        
                        DOI: 10.4064/fm-78-1-7-21                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            