On permanently singular elements in commutative m-convex locally convex algebras
Volume 37 / 1971
                    
                    
                        Studia Mathematica 37 (1971), 181-190                    
                                        
                        DOI: 10.4064/sm-37-2-181-190                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            