Journal of Inequalities and Applications
Volume 2008 (2008), Article ID 870950, 4 pages
Research Article

On Logarithmic Convexity for Ky-Fan Inequality

Matloob Anwar1 and J. Pečarić1,2

1Abdus Salam School of Mathematical Sciences, GC University, Lahore 54660, Pakistan
2Faculty of Textile Technology, University of Zagreb, 10000 Zagreb, Croatia

Received 19 November 2007; Accepted 14 February 2008

Academic Editor: Sever Dragomir

Copyright © 2008 Matloob Anwar and J. Pečarić. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We give an improvement and a reversion of the well-known Ky-Fan inequality as well as some related results.