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有限个渐进非扩张非自映象的强收敛定理
引用本文:傅秋平,谷峰.有限个渐进非扩张非自映象的强收敛定理[J].杭州师范学院学报(自然科学版),2008,7(3):172-176.
作者姓名:傅秋平  谷峰
作者单位:杭州师范大学理学院,浙江杭州,310036
基金项目:浙江省自然科学基金 , 浙江省教育厅资助项目
摘    要:设E是一致凸Banach空间,C是E的非空闭凸子集,而且C也是E的非扩张收缩核,设{Ti}No=1:C→E是N个渐进拟非扩张非自映象,定义新的迭代序列{xn},该文证明了,若F=∩Ni=1F(Ti)≠φ且存在某Tl(1≤l≤N)是半紧的,则迭代序列{xn}强收敛于{Ti}Ni=1的公共不动点.该文结果也改进和推广了一些人的最新结果.

关 键 词:隐迭代序列  强收敛  渐进拟非扩张非自映象  一致凸Banach空间  公共不动点
文章编号:1674-232X(2008)03-0172-05
修稿时间:2008年1月3日

Strong Convergence Theorem of a Finite Family of Nonexpansive Non-self Mappings
FU Qiu-ping,GU Feng.Strong Convergence Theorem of a Finite Family of Nonexpansive Non-self Mappings[J].Journal of Hangzhou Teachers College(Natural Science),2008,7(3):172-176.
Authors:FU Qiu-ping  GU Feng
Institution:(College of Sciences, Hangzhou Normal University, Hangzhou 310036, China)
Abstract:Let E be a real uniformly convex Banach space and C be a nonempty closed convex subset of E which is also a nonexpansive retract of E. Let {Ti}Ni=1:C→E be N asymptotically quasi-nonexpansive non-self mappings. A new iterative N sequence {xn } is defined. The paper also proves that if F=∩Ni=1F(Ti)≠φ and let there exist an Tl , 1 ≤l≤ N, which issemi-compact, then the sequence {xn }converges strongly to some common fixed point of {Ti}Ni=1. The results presented in this paper also extend and improve some recent results.
Keywords:implicit iteration process  asymptotically nonexpansive non-self map  uniformly convex Banaeh space  common fixed point
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