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一致光滑Banach空间中φ-半压缩映象不动点的Noor迭代逼近
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作者 赵亚莉 《常州工学院学报》 2001年第4期5-8,共4页
设X是实一致光滑Banach空间,K是X的非空凸有界子集,T:K→K是φ-半压缩映象。{α_n}n≥0,{β_n}n≥0,{γ_n}n≥0是[0,1]中的实数列满足如下条件: ①α_n→0,β_n→0,γ_n→0(n→∞) ②sum from n=0 α_n(1-α_n)=∞ 则对任意的x_0∈K,由N... 设X是实一致光滑Banach空间,K是X的非空凸有界子集,T:K→K是φ-半压缩映象。{α_n}n≥0,{β_n}n≥0,{γ_n}n≥0是[0,1]中的实数列满足如下条件: ①α_n→0,β_n→0,γ_n→0(n→∞) ②sum from n=0 α_n(1-α_n)=∞ 则对任意的x_0∈K,由Noor迭代过程 z_n=(1-γ_n)x_n+γ_nTx_n,y_n=(1-β_n)x_n+β_nTz,x_(n+1)=(1-α_n)x_n+α_nTy_n,n≥0所产生的序列{x_n}n≥0,强收敛于T的唯一不动点。相关结果处理了关于φ-强拟增生算子的非线性方程的迭代解。 展开更多
关键词 ψ-压缩映象 Noor近代过程 Reich's不等式 一致光滑BANACH空间 不动点 Noor迭代逼近
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Approximation of Fixed Point and Solution for -Hemicontraction and -Strongly Quasi-Accretive Operator without Lipschitz Assumption
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作者 周海云 赵烈济 郭金题 《Journal of Mathematical Research and Exposition》 CSCD 北大核心 2003年第1期40-46,共7页
Let X be a real uniformly smooth Banach space and let T:D(T)(?)X→Xbe (?)-hemicontractive and locally bounded at its fixed point q∈F(T).Under somesuitable assumptions on the iteration parameters {αn}and{βn},we have... Let X be a real uniformly smooth Banach space and let T:D(T)(?)X→Xbe (?)-hemicontractive and locally bounded at its fixed point q∈F(T).Under somesuitable assumptions on the iteration parameters {αn}and{βn},we have proved thatthe Mann and Ishikawa iteration processes for T converge strongly to the unique fixedpoint q of T.Several related results deal with iterative solutions of nonlinear equationsinvolving (?)-strongly quasi-accretive operators.Our results extend and generalize thosecorresponding ones by Xu and Roach,Zhou and Jia and others. 展开更多
关键词 -strong pseudocontraction -strongly accretive operator Ishikawa iteration process Reich's inequality.
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Modified Ishikawa Iterative Process with Errors in Normed Linear Spaces
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作者 姚永红 陈汝栋 周海云 《Journal of Mathematical Research and Exposition》 CSCD 北大核心 2007年第2期298-306,共9页
Ishikawa iterative sequences with errors different from the iterative sequences introduced by Liu and Xu are given. Moreover, the problem of approximating the fixed points of (ψ)-hemicontractive mapping in normed l... Ishikawa iterative sequences with errors different from the iterative sequences introduced by Liu and Xu are given. Moreover, the problem of approximating the fixed points of (ψ)-hemicontractive mapping in normed linear spaces by the modified Ishikawa iterative sequences with errors is investigated. The results presented in this paper improve and extend the results of the others. 展开更多
关键词 ψ)-hemicontractive mapping modified Ishikawa iterative sequences with errors fixed point normed linear spaces.
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