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  • Research Article
  • Open Access

A Double Inequality for Gamma Function

Journal of Inequalities and Applications20092009:503782

  • Received: 12 June 2009
  • Accepted: 30 August 2009
  • Published:


Using the Alzer integral inequality and the elementary properties of the gamma function, a double inequality for gamma function is established, which is an improvement of Merkle's inequality.


  • Gamma Function
  • Full Article
  • Elementary Property
  • Integral Inequality
  • Publisher Note

Publisher note

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Authors’ Affiliations

Haining Radio and TV University, Haining, 314400, Zhejiang, China
Department of Mathematics, Huzhou Teachers College, Huzhou, 313000, Zhejiang, China


© X. Zhang and Y. Chu. 2009

This article is published under license to BioMed Central Ltd. 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.