Volume 3, Number 3, September 2007, pp. 501-509
Koji Aoyama and Wataru Takahashi
Key words:
nonexpansive mapping, equilibrium problem, fixed point
Mathematices Subject Classification: 47H05, 47J05, 47J25
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Abstract:
In this paper, we introduce an iterative scheme by Cesàro means for finding a common element of the set of fixed points of a nonexpansive mapping and the set of solutions of an equilibrium problem in a Hilbert space. Then, we show that the sequence converges weakly to a common element of these two sets. Using this result, we obtain a generalization of the well-known nonlinear ergodic theorem by Baillon. Further, we consider the problem of finding a common point of the set of fixed points of a nonexpansive mapping and the set of solutions of a variational inequality problem for a monotone mapping in a Hilbert space.
Weak convergence theorems by Cesàro means for a nonexpansive mapping and an equilibrium problem