PM functions, their characteristic intervals and iterative roots
Tom 65 / 1997
                    
                    
                        Annales Polonici Mathematici 65 (1997), 119-128                    
                                        
                        DOI: 10.4064/ap-65-2-119-128                    
                                    
                                                Streszczenie
The concept of characteristic interval for piecewise monotone functions is introduced and used in the study of their iterative roots on a closed interval.