On the $(C,\alpha )$ uniform ergodic theorem
Volume 156 / 2003
                    
                    
                        Studia Mathematica 156 (2003), 3-13                    
                                        
                        MSC: 47A35, 47A10.                    
                                        
                        DOI: 10.4064/sm156-1-1                    
                                    
                                                Abstract
We improve a recent result of T. Yoshimoto about the uniform ergodic theorem with Cesàro means of order $\alpha $. We give a necessary and sufficient condition for the $(C,\alpha )$ uniform ergodicity with $\alpha >0$.