Journal of Inequalities and Applications 
Volume 3 (1999), Issue 2, Pages 153-160
doi:10.1155/S1025583499000119

On the Kolmogorov–Stein Inequality

Ha Huy Bang1 and Hoang Maile2

 1lnstitute of Mathematics, P.O. Box 631, Bo Ho, Hanoi, Vietnam
2Thai Nguyen Provincial Pedagogic Secondary School, Vietnam
Received 15 December 1997; Revised 6 February 1998

Abstract

In this paper, we prove the Kolmogorov–Stein inequality for norms generated by concave functions (with the same constants).