中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2007, Vol. 26 ›› Issue (3): 163-165.

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非扩张映象的Ishikawa迭代与最佳逼近元

廖正琦   

  1. 重庆交通大学理学院,重庆 400074
  • 收稿日期:2006-02-21 修回日期:2006-03-09 出版日期:2007-06-15 发布日期:2015-05-18
  • 作者简介:廖正琦(1957一),男,重庆市垫江人,副教授,主要从事泛函分析科研工作

Ishikawa Iteration of Coupled Fixed Points for Nonexpansive Mapping and Element of the Best Approximation

LIAO Zheng-qi   

  1. School of Science,Chongqing Jiaotong University,Chongqing 400074,China
  • Received:2006-02-21 Revised:2006-03-09 Online:2007-06-15 Published:2015-05-18

摘要: 在严格凸Banach空间中研究了非扩张映象 的耦合不动点集F(T)的闭凸性,获得了当F(T)是Hilbert空间 中的闭线性子空间时,Ishikawa迭代的极限元与其初始元的最佳逼近元之间的关系.

关键词: 非扩张映象, 耦合不动点, 严格凸, 最佳逼近元

Abstract: In strictly convex Banach space,there is set F(T)of coupled fixed points of T for nonexpansive mapping,and it is a closed convex set.When the F(T)becomes the closed linear subspace of the Hilbert space,the relationship of the elements of best approximation between the limit element and initial element of Ishikawa iteration is put forward.

Key words: nonexpansive mapping, coupled fixed point, strictly convex, element of the best approximation

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