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  • Letter to the Editor
  • Open Access

A Note on Strong Convergence of a Modified Halpern's Iteration for Nonexpansive Mappings

Fixed Point Theory and Applications20102010:805326

  • Received: 25 September 2009
  • Accepted: 18 January 2010
  • Published:


In the paper by Hu in 2008, the author proved a strong convergence result for nonexpansive mappings using a modified Halpern's iteration algorithm. Unfortunately, the case does not guarantee the strong convergence of the sequence . In this note, we provide a counter-example to the theorem.


  • Differential Geometry
  • Nonexpansive Mapping
  • Strong Convergence
  • Computational Biology
  • Full Article

Publisher note

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Authors’ Affiliations

Department of Mathematics, Hubei Normal University, Huangshi, 435002, China


© Shuang Wang. 2010

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.