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渐近非扩张映像族公共不动点具误差一般复合隐格式迭代算法 被引量:1
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作者 郭金题 陆爱霞 《河北师范大学学报(自然科学版)》 CAS 北大核心 2007年第2期167-170,176,共5页
提出了Banach空间中非扩张映像族{Ti}iN=1公共不动点具误差的广义复合隐迭代格式:xn=αnxn-1+βnTnyn+γnun,yn=wnxn-1+snTnxn+tnTnxn-1,αn+βn+γn=wn+sn+tn=1.其中:{αn},{βn},{γn},{wn},{sn},{tn}∈[0,1];Tn=TnmodN.证明了弱收敛... 提出了Banach空间中非扩张映像族{Ti}iN=1公共不动点具误差的广义复合隐迭代格式:xn=αnxn-1+βnTnyn+γnun,yn=wnxn-1+snTnxn+tnTnxn-1,αn+βn+γn=wn+sn+tn=1.其中:{αn},{βn},{γn},{wn},{sn},{tn}∈[0,1];Tn=TnmodN.证明了弱收敛及强收敛定理,其结果扩展及推广了已有结果. 展开更多
关键词 复合隐迭代 非扩张映像 弱收敛 强收敛 OPIAL条件 次闭原理
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Strong convergence theorems for nonexpansive semi-groups in Banach spaces 被引量:2
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作者 张石生 杨莉 柳京爱 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2007年第10期1287-1297,共11页
Some strong convergence theorems of explicit composite iteration scheme for nonexpansive semi-groups in the framework of Banach spaces are established. Results presented in the paper not only extend and improve the co... Some strong convergence theorems of explicit composite iteration scheme for nonexpansive semi-groups in the framework of Banach spaces are established. Results presented in the paper not only extend and improve the corresponding results of ShiojiTakahashi, Suzuki, Xu and Aleyner-Reich, but also give a partially affirmative answer to the open questions raised by Suzuki and Xu. 展开更多
关键词 nonexpansive semi-group demi-closed principle common fixed point uni-formly smooth Banach space weakly continuous normalized duality mapping
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Convergence theorem of common fixed points for Lipschitzian pseudo-contraction semi-groups in Banach spaces
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作者 张石生 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2009年第2期145-152,共8页
The purpose of this paper is to study the weak convergence problems of the implicity iteration process for Lipschitzian pseudocontractive semi-groups in the general Banach spaces. The results presented in this paper e... The purpose of this paper is to study the weak convergence problems of the implicity iteration process for Lipschitzian pseudocontractive semi-groups in the general Banach spaces. The results presented in this paper extend and improve the corresponding results of some people. 展开更多
关键词 Lipschitzian pseudo-contraction semi-group demi-closed principle common fixed point Opial condition strongly pseudo-contraction mapping implicit iteration process
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ON PROBLEM OF NEAREST COMMON FIXED POINT OF NONEXPANSIVE MAPPINGS
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作者 张石生 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2006年第7期883-889,共7页
The purpose is by using the viscosity approximation method to study the convergence problem of the iterative scheme for an infinite family of nonexpansive mappings and a given contractive mapping in a reflexive Banach... The purpose is by using the viscosity approximation method to study the convergence problem of the iterative scheme for an infinite family of nonexpansive mappings and a given contractive mapping in a reflexive Banach space. Under suitable conditions, it was proved that the iterative sequence converges strongly to a common fixed point which was also the unique solution of some variational inequality in a reflexive Banach space. The results presented extend and improve some recent results. 展开更多
关键词 sequence of nonexpansive mappings viscosity approximation common fixed point demi-closed principle weakly sequentially continuous duality mapping normalized duality mapping
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Weak Convergence Theorem for Lipschizian Pseudocontraction Semigroups in Banach Spaces 被引量:2
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作者 Shi Sheng ZHANG 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2010年第2期337-344,共8页
The purpose of this paper is to study the weak convergence problems of the irnplicity iteration process for Lipschitzian pseudocontraction semigroups in general Banach spaces. The results presented in this paper exten... The purpose of this paper is to study the weak convergence problems of the irnplicity iteration process for Lipschitzian pseudocontraction semigroups in general Banach spaces. The results presented in this paper extend and improve the corresponding results of Zhou [Nonlinear Anal., 68, 2977-2983 (2008)], Chen, et ah [J. Math. Anal. Appl., 314, 701 709 (2006)], Xu and Ori [Numer. Funct. Anal. Optim, 22, 767-773 (2001)] and Osilike [J. Math. Anal. Appl., 294, 73-81 (2004)]. Keywords 展开更多
关键词 Lipschitzian pseudocontraction semigroup demi-closed principle common fixed point Opial condition strongly pseudocontractive mapping implicit iteration process
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