Inexact Iterates of Nonexpansive Mappings with Summable Errors in Metric Spaces with Graphs

Abstract

In our joint work with Dan Butnariu (2006) we established the stability of the convergence of iterates of a nonexpansive mapping on a complete metric space in the presence of summable computational errors. In a recent paper of ours, we extended this result to inexact iterates of nonexpansive mappings on complete metric spaces with graphs under a certain assumption on the iterates. In the present paper we obtain an analogous result by removing that assumption on the iterates and replacing it with an additional assumption on the graph.

Keywords

• complete metric space
• fixed point
• graph
• inexact iterate
• nonexpansive mapping