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ITERATIVE APPROXIMATION OF FIXED POINTS FOR MULTIVALUED OPERATORS OF THE MONOTONE TYPE IN UNIFORMLY SMOOTH BANACH SPACES
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作者 曾六川 《Numerical Mathematics A Journal of Chinese Universities(English Series)》 SCIE 1999年第1期59-66,共8页
In this paper, let K be a nonempty subset of a uniformly smooth Banach space X, and T:K→2~k be a multivalued operator of the monotone type. The iterative sequence which converges strongly to the unique fixed point of... In this paper, let K be a nonempty subset of a uniformly smooth Banach space X, and T:K→2~k be a multivalued operator of the monotone type. The iterative sequence which converges strongly to the unique fixed point of T is given. Our results are the extension and improvements of the results obtained previously by several authors including Dunn, Chidume, Deng and Ding. 展开更多
关键词 Multivalued OPERATOR MONOTONE type UNIFORMLY smooth banach space.
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光滑Banach空间中Birkhoff正交组的性质
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作者 王晓梅 计东海 《哈尔滨理工大学学报》 CAS 北大核心 2024年第1期143-149,共7页
参考内积空间中正交组的定义,在有限维实Banach空间中引入了Birkhoff正交组的概念,并围绕光滑的Banach空间中是否存在所含元素个数超过空间维数的Birkhoff正交组这一问题展开研究。证明了二维光滑的Banach空间中不存在所含元素个数超过... 参考内积空间中正交组的定义,在有限维实Banach空间中引入了Birkhoff正交组的概念,并围绕光滑的Banach空间中是否存在所含元素个数超过空间维数的Birkhoff正交组这一问题展开研究。证明了二维光滑的Banach空间中不存在所含元素个数超过空间维数的Birkhoff正交组;三维及以上的光滑Banach空间中不存在所含元素个数超过空间维数且所含元素均为左(右)对称点的Birkhoff正交组。表明了若n(≥3)维光滑的Banach空间中存在Birkhoff正交组A={x_(1),x_(2),…,x_(n),x_(n+1)},则A必不满足以下两个条件:(1)对A中任意一点x_(m)有x_(m)⊥B_(x)_(i)(∀i≠m);(2)对A中任意一点x_(m)有x_(i)⊥_(B)x_(m)(∀i≠m)。 展开更多
关键词 banach空间 Birkhoff正交 Birkhoff正交组 光滑性
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ISHIKAWA ITERATIVE PROCESS IN UNIFORMLY SMOOTH BANACH SPACES
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作者 HUANG Zhen-yu(黄震宇) 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2001年第11期1306-1310,共5页
Let E be a uniformly smooth Banach space, K be a nonempty closed convex subset of E, and suppose: T: K --> K is a continuous Phi-strongly pseudocontractive operator with a bounded range. Using a new analytical meth... Let E be a uniformly smooth Banach space, K be a nonempty closed convex subset of E, and suppose: T: K --> K is a continuous Phi-strongly pseudocontractive operator with a bounded range. Using a new analytical method, under general cases, the Ishikawa iterative process {x(n)} converges strongly to the unique fixed point x* of the operator T were proved. The paper generalizes and extends a lot of recent corresponding results. 展开更多
关键词 Ishikawa iterative process Phi-stongly pseudocontractive operators uniformly smooth banach spaces
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A New System of Generalized Variational Inclusions Involving H-η-monotone Operators in Uniformly Smooth Banach Spaces
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作者 FENG SHI-QIANG GAO DA-PENG 《Communications in Mathematical Research》 CSCD 2012年第4期324-336,共13页
In this paper, we introduce and study a new system of generalized vari- ational inclusions involving H-η-monotone operators in uniformly smooth Banach spaces. Using the resolvent operator technique associated with H-... In this paper, we introduce and study a new system of generalized vari- ational inclusions involving H-η-monotone operators in uniformly smooth Banach spaces. Using the resolvent operator technique associated with H-η-monotone opera- tors, we prove the approximation solvability of solutions using an iterative algorithm. The results in this paper extend and improve some known results from the literature. 展开更多
关键词 uniformly smooth banach space H-η-monotone operator resolventoperator technique system of generalized variational inclusion iterative algorithm
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Iterative Approximation of Fixed Points for Uniformly Continuous and Strongly Pseudocontractive Mappings in Smooth Banach Spaces
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作者 周海云 《Chinese Quarterly Journal of Mathematics》 CSCD 1999年第2期42-46, ,共5页
With an inequality and some analysis techniques,iterative approximation of fixed points for uniformly continuous and strongly pseudocontractive mappings in smooth Banach spaces is studied,and the recent corresponding ... With an inequality and some analysis techniques,iterative approximation of fixed points for uniformly continuous and strongly pseudocontractive mappings in smooth Banach spaces is studied,and the recent corresponding results of Chidume are improved. 展开更多
关键词 Ishikawa iteration process strong pseudocontraction strongly accretive mapping smooth banach space
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Implicit Variational Inclusions and Algorithms Involving (A, η)-monotone Operators in 2-uniformly Smooth Banach Spaces
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作者 N. K. Sahu 《Journal of Mathematics and System Science》 2015年第6期269-278,共10页
This paper deals with a new class of nonlinear set valued implicit variational inclusion problems involving (A, η)-monotone mappings in 2-uniformly smooth Banach spaces. Semi-inner product structure has been used t... This paper deals with a new class of nonlinear set valued implicit variational inclusion problems involving (A, η)-monotone mappings in 2-uniformly smooth Banach spaces. Semi-inner product structure has been used to study the (A, η)-monotonicity. Using the generalized resolvent operator technique and the semi-inner product structure, the approximation solvability of the proposed problem is investigated. An iterative algorithm is constructed to approximate the solution of the problem. Convergence analysis of the proposed algorithm is investigated. Similar results are also investigated for variational inclusion problems involving (H, η)-monotone mappings. 展开更多
关键词 Semi-inner product space Generalized resolvent operator Variational inclusion 2-uniformly smooth banach space.
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Variational Analysis Based on Proximal Subdifferential on Smooth Banach Spaces
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作者 Xi Yin ZHENG 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2024年第2期595-618,共24页
This paper first shows that for any p∈(1,2)there exists a continuously differentiable function f on l^(p)(and L^(p))such that the proximal subdifferential of f is empty everywhere,and hence it is not suitable to deve... This paper first shows that for any p∈(1,2)there exists a continuously differentiable function f on l^(p)(and L^(p))such that the proximal subdifferential of f is empty everywhere,and hence it is not suitable to develop theory on proximal subdifferential in the classical Banach spaces l^(P)and L^(P) with p∈(1,2).On the other hand,this paper establishes variational analysis based on the proximal subdifferential in the framework of smooth Banach spaces of power type 2,which conclude all Hilbert spaces and all the classical spaces l^(P)and L^(P)with p∈(2,+∞).In particular,in such a smooth space,we provide the proximal subdifferential rules for sum functions,product functions,composite functions and supremum functions,which extend the basic results on the proximal subdifferential established in the framework of Hilbert spaces.Some of our main results are new even in the Hilbert space case.As applications,we provide KKT-like conditions for nonsmooth optimization problems in terms of proximal subdifferential. 展开更多
关键词 smooth banach space proximal subdifferential proximal normal cone KKT condition
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STRONG CONVERGENCE OF APPROXIMATED SEQUENCES FOR NONEXPANSIVE MAPPINGS IN BANACH SPACES 被引量:2
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作者 Huang Jianfeng Wang Yuanheng 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2007年第3期311-315,共5页
This paper studies the convergence of the sequence defined by x0 ∈ C, xn+l =αnu+(1-αn)Txn, n=0, 1,2,..., where 0 ≤αn ≤ 1, limn→∞ αn = 0, ∑n=0^∞ αn = ∞, and T is a nonexpansive mapping from a nonempty... This paper studies the convergence of the sequence defined by x0 ∈ C, xn+l =αnu+(1-αn)Txn, n=0, 1,2,..., where 0 ≤αn ≤ 1, limn→∞ αn = 0, ∑n=0^∞ αn = ∞, and T is a nonexpansive mapping from a nonempty closed convex subset C of a Banach space X into itself. The iterative sequence {xn} converges strongly to a fixed point of T in the case when X is a uniformly convex Banach space with a uniformly Gateaux differentiable norm or a uniformly smooth Banach space only. The results presented in this paper extend and improve some recent results. 展开更多
关键词 nonexpansive mapping uniformly convex banach space uniformly smooth banach space banach limit.
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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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A New System of Variational Inclusions with (H,η)-accretive Operators in Banach Spaces 被引量:3
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作者 LIU Ying CHEN Yong-li HE Zhen 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2008年第4期565-573,共9页
In this paper, we first introduce a new class of generalized accretive operators named (H,η)-accretive in Banach space. By studying the properties of (H,η)-accretive, we extend the concept of resolvent operators... In this paper, we first introduce a new class of generalized accretive operators named (H,η)-accretive in Banach space. By studying the properties of (H,η)-accretive, we extend the concept of resolvent operators associated with m-accretive operators to the new (H,η)-accretive operators. In terms of the new resolvent operator technique, we prove the existence and uniqueness of solutions for this new system of variational inclusions. We also construct a new algorithm for approximating the solution of this system and discuss the convergence of the sequence of iterates generated by the algorithm. 展开更多
关键词 q-uniformly smooth banach space (H η)-accretive operator resolvent operator technique system of variational inclusion iterative algorithm
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A system of general nonlinear variational inclusions in Banach spaces
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作者 Xieping DING SALAHUDDIN 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2015年第12期1663-1672,共10页
A new system of general nonlinear variational inclusions is introduced and studied in Banach spaces. An iterative algorithm is developed and analyzed by use of the resolvent operator techniques to find the approximate... A new system of general nonlinear variational inclusions is introduced and studied in Banach spaces. An iterative algorithm is developed and analyzed by use of the resolvent operator techniques to find the approximate solutions of the system of general nonlinear variational inclusions involving different nonlinear operators in uniformly smooth Banach spaces. 展开更多
关键词 system of general nonlinear variational inclusions strongly accretive mapping relaxed accretive mapping resolvent operator uniformly smooth banach space
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Iterative Approximation with Errors for Generalized Set-Valued Strongly Accretive Mapping in Banach Spaces
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作者 张勇 《Journal of Southwest Jiaotong University(English Edition)》 2007年第1期70-74,共5页
A new concept of generalized set-valued strongly accretive mappings in Banach spaces was given and some strong convergence theorems of Ishikawa and Mann iterative process with errors approximation methods by Huang et ... A new concept of generalized set-valued strongly accretive mappings in Banach spaces was given and some strong convergence theorems of Ishikawa and Mann iterative process with errors approximation methods by Huang et al. was proved. The results presented in this paper improve and extend the earlier results obtained by Huang et al. 展开更多
关键词 Generalized set-valued strongly accretive mappings Ishikawa and Mann iterative processes with errors q-Uniformly smooth banach spaces Generalized duality mapping
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Supporting Functions and The Differentiabilities of the Norms on Banach Spaces
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作者 王建根 《Chinese Quarterly Journal of Mathematics》 CSCD 1995年第1期97-102,共6页
In this paper, we defined a new continuity of supporting function and studyed a new convexity, smoothness of Banach Space and from this we studyed the relations among such convexity, smoothness and differentiability o... In this paper, we defined a new continuity of supporting function and studyed a new convexity, smoothness of Banach Space and from this we studyed the relations among such convexity, smoothness and differentiability of the norm of Banach Space. 展开更多
关键词 banach space SUPPORTING function NORM smoothNESS DIFFERENTIABILITY
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Banach值鞅变换算子的有界性 被引量:10
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作者 翟富菊 张传洲 《数学杂志》 CSCD 北大核心 2004年第3期341-346,共6页
本文运用Banach值鞅不等式和鞅空间的相互嵌入关系 ,讨论了Banach空间值鞅空间上鞅变换算子Tv 的有界性 。
关键词 B值鞅空间 鞅变换 凸性 光滑性
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一致光滑Banach空间中一类非线性映象的迭代过程 被引量:25
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作者 周海云 陈东青 《应用数学》 CSCD 1998年第4期70-73,共4页
本文引入了广义Lipschitz的概念,研究了广义Lipschitz强增生映象的Mann型迭代和Ishikawa型迭代过程的收敛性,所得结果统一和扩展了近期相关结果.
关键词 ISHIKAWA迭代 迭代过程 非线性映象 巴拿赫空间
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Banach空间值鞅变换的有界性及其应用 被引量:9
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作者 于林 金雁鸣 《应用数学》 CSCD 北大核心 2006年第2期407-413,共7页
本文给出关于Banach空间值鞅变换算子有界性的一种新的处理方法,得到一系列带有广泛性的结果,并应用鞅变换算子的有界性刻画了Banach空间的一致光滑性和一致凸性,使得许多已有文献中的结论成为本文的特例.
关键词 banach空间值鞅 鞅变换 一致光滑性 一致凸性
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关于Banach空间非扩张半群的强收敛定理 被引量:7
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作者 张石生 杨莉 柳京爱 《应用数学和力学》 CSCD 北大核心 2007年第10期1146-1156,共11页
在Banach空间框架下,建立了几个关于非扩张半群显式迭代序列的强收敛定理.所得结果不仅推广和改进了Shioji-Takahashi,Suzuki,Xu以及Aleyner-Reich等人的相应结果,而且还部分肯定地回答了Suzuki和Xu提出的两个公开问题.
关键词 非扩张半群 半闭原理 公共不动点 一致光滑的banach空间 具弱连续性的正规对偶映象
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Banach空间中Noor型变分不等式的广义投影法 被引量:3
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作者 徐永春 何欣枫 +1 位作者 侯志彬 何震 《数学物理学报(A辑)》 CSCD 北大核心 2010年第3期808-817,共10页
该文提出并分析了用广义投影方法解Noor型广义变分不等式问题.在较弱的条件下考虑了一个迭代格式的收敛性.由于广义变分不等式包含了许多变分不等式和相补问题为特例,因此该文得出的结果可以应用到这些问题中.这些结果是以前众多学者所... 该文提出并分析了用广义投影方法解Noor型广义变分不等式问题.在较弱的条件下考虑了一个迭代格式的收敛性.由于广义变分不等式包含了许多变分不等式和相补问题为特例,因此该文得出的结果可以应用到这些问题中.这些结果是以前众多学者所做工作的完善和改进. 展开更多
关键词 广义投影映射 Noor型广义变分不等式 一致光滑banach空间 李雅普诺夫泛函
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复拟Banach空间的PL一致光滑性及其鞅刻划 被引量:3
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作者 魏文展 李日光 元昌安 《数学杂志》 CSCD 1998年第3期321-332,共12页
本文引进了复空间的PL一致光滑性与复对称鞅,证明了等价赋范定理,得到了一系列关于PL一致光滑空间的复对称鞅不等式·并应用复对称鞅的大数定律给出了值空间的PL一致光滑性的刻划·
关键词 PL一致光滑 复对称鞅 复拟巴拿赫空间 大数定律
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Banach空间的凸性模与光滑模 被引量:3
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作者 龚小兵 贾正智 《新疆大学学报(自然科学版)》 CAS 2004年第1期11-16,共6页
定义了TC凸性模,TC光滑模,刻划了一致凸性与一致光滑性,并研究了取值于Banach空间的特殊鞅不等式与一致凸性,一致光滑性的关系.
关键词 banach空间 TC凸性模 TC光滑模 一致凸性 一致光滑性 鞅不等式
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