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具误差隐格式迭代逼近严格伪压缩映像族公共不动点 (英)
引用本文:苏永福,李素红,宋义生,周海云.具误差隐格式迭代逼近严格伪压缩映像族公共不动点 (英)[J].数学研究及应用,2007,27(1):98-106.
作者姓名:苏永福  李素红  宋义生  周海云
作者单位:天津工业大学理学院数学系, 天津 300160;天津工业大学理学院数学系, 天津 300160;天津工业大学理学院数学系, 天津 300160;石家庄军械工程学院数学系, 河北 石家庄 050003
基金项目:国家自然科学基金(10471033); 天津市学科建设基金(100580204)
摘    要:设$K$是实Banach空间$E$中非空闭凸集, $\{T_i\}_i=1^{N}$是$N$个具公共不动点集$F$的严格伪压缩映像, $\{\alpha_n\}\subset 0,1]$是实数列, $\{u_n\}\subset K$是序列, 且满足下面条件 (i)\ 设$K$是实Banach空间$E$中非空闭凸集, $\{T_i\}_i=1^{N}$是$N$个具公共不动点集$F$的严格伪压缩映像, $\{\alpha_n\}\subset 0,1]$是实数列, $\{u_n\}\subset K$是序列, 且满足下面条件 (i)\ 设$K$是实Banach空间$E$中非空闭凸集, $\{T_i\}_i=1^{N}$是$N$个具公共不动点集$F$的严格伪压缩映像, $\{\alpha_n\}\subset 0,1]$是实数列, $\{u_n\}\subset K$是序列, 且满足下面条件 (i)\ 设K是实Banach空间E中非空闭凸集,{Ti}i=1^N是N个具公共不动点集F的严格伪压缩映像,{αn}包括于0,1]是实数例,{un}包括于K是序列,且满足下面条件(i)0〈α≤αn≤1;(ii)∑n=1∞(1-αn)=+∞.(iii)∑n=1∞ ‖un‖〈+∞.设x0∈K,{xn}由正式定义xn=αnxn-1+(1-αn)Tnxn+un-1,n≥1,其中Tn=Tnmodn,则下面结论(i)limn→∞‖xn-p‖存在,对所有p∈F;(ii)limn→∞d(xn,F)存在,当d(xn,F)=infp∈F‖xn-p‖;(iii)lim infn→∞‖xn-Tnxn‖=0.文中另一个结果是,如果{xn}包括于1-2^-n,1],则{xn}收敛,文中结果改进与扩展了Osilike(2004)最近的结果,证明方法也不同。

关 键 词:严格伪压缩映像    具误差隐格式迭代    公共不动点    收敛定理.
文章编号:1000-341X(2007)01-0098-09
收稿时间:4/1/2005 12:00:00 AM
修稿时间:2005-04-012005-07-19

Implicit Iteration Process with Errors for Common Fixed Points of a Finite Family of Strictly Pseudocontractive Maps
SU Yong-fu,LI Su-hong,SONG Yi-sheng and ZHOU Hai-yun.Implicit Iteration Process with Errors for Common Fixed Points of a Finite Family of Strictly Pseudocontractive Maps[J].Journal of Mathematical Research with Applications,2007,27(1):98-106.
Authors:SU Yong-fu  LI Su-hong  SONG Yi-sheng and ZHOU Hai-yun
Institution:Department of Mathematics, Tianjin Polytechnic University, Tianjin 300160, China;Department of Mathematics, Tianjin Polytechnic University, Tianjin 300160, China;Department of Mathematics, Tianjin Polytechnic University, Tianjin 300160, China;Department of Mathematics, Shijiazhuang Mechanical Engineering College, Hebei 050003, China
Abstract:Let $E$ be a real Banach space and $K$ be a nonempty closed convex subset of $E$. Let $\{T_i\}_{i=1}^N$ be $N$ strictly pseudocontractive self-maps of $K$ such that $F=\bigcap_{i=1}^N F(T_i)\neq\emptyset$, where $F(T_i)=\{x \in K:T_ix=x\}$, $\{\alpha_n\}\subset 0,1]$ be a real sequence, and $\{u_n\}\subset K$ be a sequence satisfying the conditions: (i)~Let $E$ be a real Banach space and $K$ be a nonempty closed convex subset of $E$. Let $\{T_i\}_{i=1}^N$ be $N$ strictly pseudocontractive self-maps of $K$ such that $F=\bigcap_{i=1}^N F(T_i)\neq\emptyset$, where $F(T_i)=\{x \in K:T_ix=x\}$, $\{\alpha_n\}\subset 0,1]$ be a real sequence, and $\{u_n\}\subset K$ be a sequence satisfying the conditions: (i)~Let $E$ be a real Banach space and $K$ be a nonempty closed convex subset of $E$. Let $\{T_i\}_{i=1}^N$ be $N$ strictly pseudocontractive self-maps of $K$ such that $F=\bigcap_{i=1}^N F(T_i)\neq\emptyset$, where $F(T_i)=\{x \in K:T_ix=x\}$, $\{\alpha_n\}\subset 0,1]$ be a real sequence, and $\{u_n\}\subset K$ be a sequence satisfying the conditions: (i)~$0
Keywords:strictly pseudocontractive mappings  implicit iteration process with error  common fixed points  convergence theorems  
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