Fixed Point Theory and Applications 
Volume 2007 (2007), Article ID 28619, 8 pages
doi:10.1155/2007/28619
Research Article

An Iteration Method for Nonexpansive Mappings in Hilbert Spaces

Lin Wang

Department of Mathematics, Kunming Teachers College, Kunming, Yunnan 650031, China

Received 22 August 2006; Revised 2 November 2006; Accepted 2 November 2006

Recommended by Nan-Jing Huang

Abstract

In real Hilbert space H, from an arbitrary initial point x0H, an explicit iteration scheme is defined as follows: xn+1=αnxn+(1αn)Tλn+1xn,n0, where Tλn+1xn=Txnλn+1μF(Txn), T:HH is a nonexpansive mapping such that F(T)={xK:Tx=x} is nonempty, F:HH is a η-strongly monotone and k-Lipschitzian mapping, {αn}(0,1), and {λn}[0,1). Under some suitable conditions, the sequence {xn} is shown to converge strongly to a fixed point of T and the necessary and sufficient conditions that {xn} converges strongly to a fixed point of T are obtained.