A gauge approach to an ordinal index of Baire one functions
Tom 210 / 2010
                    
                    
                        Fundamenta Mathematicae 210 (2010), 99-109                    
                                        
                        MSC: Primary 26A21; Secondary 03E15, 54C30.                    
                                        
                        DOI: 10.4064/fm210-2-1                    
                                    
                                                Streszczenie
We develop a calculus for the oscillation index of Baire one functions using gauges analogous to the modulus of continuity.