Applications of Bregman-Opial Property to Bregman Nonspreading Mappings in Banach Spaces

作者:Naraghirad, Eskandar*; Wong, Ngai Ching; Yao, Jen Chih
来源:Abstract and Applied Analysis, 2014, 2014: 272867.
DOI:10.1155/2014/272867

摘要

The Opial property of Hilbert spaces and some other special Banach spaces is a powerful tool in establishing fixed point theorems for nonexpansive and, more generally, nonspreading mappings. Unfortunately, not every Banach space shares the Opial property. However, every Banach space has a similar Bregman-Opial property for Bregman distances. In this paper, using Bregman distances, we introduce the classes of Bregman nonspreading mappings and investigate the Mann and Ishikawa iterations for these mappings. We establish weak and strong convergence theorems for Bregman nonspreading mappings.