Fixed Point Theory and Applications
Volume 2011 (2011), Article ID 257034, 3 pages
Letter to the Editor

Comment on “A Strong Convergence of a Generalized Iterative Method for Semigroups of Nonexpansive Mappings in Hilbert Spaces”

1Department of Mathematics, Islamic Azad University, Sanandaj Branch, P.O. Box 618, Sanandaj, Iran
2Department of Mathematics, University of Kurdistan, Kurdistan, Sanandaj 416, Iran

Received 23 January 2011; Accepted 3 March 2011

Copyright © 2011 Farman Golkarmanesh and Saber Naseri. 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.


Piri and Vaezi (2010) introduced an iterative scheme for finding a common fixed point of a semigroup of nonexpansive mappings in a Hilbert space. Here, we present that their conclusions are not original and most parts of their paper are picked up from Saeidi and Naseri (2010), though it has not been cited.