关于一类变分不等式的迭代算法

本文通过对「１」中相应结构的讨论与改进,利用变分不等式求解技巧,讨论了Ｈｉｌｂｅｒｔ空间中一类广义变分不等式的解的迭代算法及其收敛性,指出了文「１」中主要结果的证明的一些不足之处,本文所得结果推广并改进了「１」的相应结论。     

Generalized multivalued nonlinear quasivariational inclusions

In this paper, we introduce and study a few classes of generalized multivalued nonlinear quasivariational inclusions and generalized nonlinear quasivariational inequalities, which include many classes of variational inequalities, quasivariational inequalities and variational inclusions as special cases. Using the resolvent operator technique for maximal monotone mapping, we construct some new iterative algorithms for finding the approximate solutions of these classes of quasivariational inclusions and quasivariational inequalities. We establish the existence of solutions for this generalized nonlinear quasivariational inclusions involving both relaxed Lipschitz and strongly monotone and generalized pseudocontractive mappings and obtain the convergence of iterative sequences generated by the algorithms. Under certain conditions, we derive the existence of a unique solution for the generalized nonlinear quasivariational inequalities and obtain the convergence and stability results of the Noor type perturbed iterative algorithm. The results proved in this paper represent significant refinements and improvements of the previously known results in this area.     

一类非线性算子方程解的迭代逼近

在一般的Banach空间中讨论强增生算子方程解和严格伪压缩算子不动点的迭代逼近问题,我们的结果改进并推广了文[1,2,5,7]中的相应结果。     

一类强增生型变分不等式解的Mann迭代法

研究了实自反Banach空间中一类具有Lipschitz条件的强增生型变分不等式解的存在性、唯一性及其具有混合误差项的Mann迭代程序的收敛性问题.该文结果是一些作者早期与最近的相应结果的改进与推广.     

一类非线性变分包含问题解的存在性和迭代逼近问题

研究了实自反Banach空间中一类具有L ipsch itz条件的强增生型变分包含解的存在性、唯一性及其具有混合误差项的M ann迭代程序的收敛性问题.另一方面,一个相关结果,讨论了一类强增生型变分不等式解的存在性和带有混合误差项的M ann迭代序列的收敛性.结果改进和推广了张石生,曾六川等人的相应结果.     

一类非线性变分包含问题解的迭代程序的收敛性和稳定性

在实自反Banach空间中，证明了强增生型变分包含解的具有误差项的Ishikawa迭代程序的一些新的收敛性和稳定性定理.所得结果改进、推广和发展了一些作者早期与最近的相关结果.     

Iteration processes for approximating fixed points of operators of monotone type

In this paper, the unique fixed points of multi-valued and single-valued operators of monotone type are approximated by Ishikawa and Mann iteration processes with errors in real Banach spaces. The operators may not satisfy the Lipschitzian conditions. The results presented improve and extend some recent results.

     

关于包含有限个强伪压缩映射的凸可行性问题解的迭代逼近

在Banach空间中,证明了多步迭代序列强收敛于有限个强伪压缩映射的公共不动点.同时,给出了有限个(强)增生算子方程公共解的强收敛定理.所得结果推广和改进了许多重要结果.     

Convergence theorem for equilibrium problem and Bregman strongly nonexpansive mappings in Banach spaces

In this paper, we present an iterative scheme for Bregman strongly nonexpansive mappings in the framework of Banach spaces. Furthermore, we prove the strong convergence theorem for finding common fixed points with the set of solutions of an equilibrium problem.     

Approximating a Zero of Sum of Two Monotone Operators Which Solves a Fixed Point Problem in Reflexive Banach Spaces

Abstract

The purpose of this paper is to introduce an iterative method for approximating a point in the set of zeros of the sum of two monotone mappings, which is also a solution of a fixed point problem for a Bregman strongly nonexpansive mapping in a real reflexive Banach space. With our iterative technique, we state and prove a strong convergence theorem for approximating an element in the intersection of the set of solutions of a variational inclusion problem for sum of two monotone mappings and the set of solutions of a fixed point problem for Bregman strongly nonexpansive mapping. We give applications of our result to convex minimization problem, convex feasibility problem, variational inequality problem, and equilibrium problem. Our result complements and extends some recent results in literature.     

强拟闭集与强拟连续

利用半闭集引入强拟闭集概念,研究了半开集、强拟开集、强拟闭集概念之间的关系,得到了强拟闭集是连续闭映射下的不变量及其相关性质;最后给出强拟连续概念并得到其等价刻画.     

关于保持距离映射的Aleksandrov问题

设E,F为实Hilbert空间,f:E→F为一映射,本文证明了在一定条件下,若f保距离a和b(其中,a,b为两个正实数),则f为一个仿射等距,从而部分地解决了Aleksandrov在1970年提出的Aleksandrov问题。     

CONVERGENCE ANALYSIS FOR SYSTEM OF EQUILIBRIUM PROBLEMS AND LEFT BREGMAN STRONGLY RELATIVELY NONEXPANSIVE MAPPING

In this paper, we prove strong convergence theorems for approximation of a fixed point of a left Bregman strongly relatively nonexpansive mapping which is also a solution to a finite system of equilibrium problems in the framework of reflexive real Banach spaces. We also discuss the approximation of a common fixed point of a family of left Bregman strongly nonexpansive mappings which is also solution to a finite system of equilibrium problems in reflexive real Banach spaces. Our results complement many known recent results in the literature.     

Convergence analysis for system of equilibrium problems and left bregman strongly relatively nonexpansive mapping

In this paper, we prove strong convergence theorems for approximation of a fixed point of a left Bregman strongly relatively nonexpansive mapping which is also a solution to a finite system of equilibrium problems in the framework of reflexive real Banach spaces. We also discuss the approximation of a common fixed point of a family of left Bregman strongly nonexpansive mappings which is also solution to a finite system of equilibrium problems in reflexive real Banach spaces. Our results complement many known recent results in the literature.     

Strong C-Sets and Decompositions of Continuity

In this paper, we introduce strongly semi-closed sets and strongly -closed sets and using these sets we obtain decompositions of continuity.     

Banach空间中增生算子方程的迭代程序的解与误差估计

在一般Ｂａｎａｃｈ空间中研究了Ｌｉｐｓｃｈｉｔｚ强增生算子迭代逼近及其误差估计问题     

A FURTHER GENERALIZATION OF THE KKM THEOREM WITH APPLICATIONS

ＡＦＵＲＴＨＥＲＧＥＮＥＲＡＬＩＺＡＴＩＯＮＯＦＴＨＥＫＫＭＴＨＥＯＲＥＭ　ＷＩＴＨＡＰＰＬＩＣＡＴＩＯＮＳＪＩＡＮＧＪＩＡＨＥ（江嘉禾）（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍｏｔｉｃｓ，ＵｎｉｖｅｒｓｉｔｙｏｆＥｌｅｃｔｒｏｎｉｃＳｃｉｅｎｃｅｃｕ...     

非线性增生算子方程带误差的三重迭代及其收敛性分析

设Z为实一致光滑Banach空间,T∶Z→Z为强增生映射,文章提出了新的带误差的三重迭代序列,并证明了带误差的三重迭代序列强收敛到方程Tx=f的唯一解,(带误差的)Mann迭代和(带误差的)Ishikawa迭代均可作为其特例.此外,相关结果也讨论了关于强伪压缩映射不动点的三重迭代逼近问题.     

A hybrid descent method for solving a convex constrained optimization problem with applications

The purpose of this paper is to introduce a hybrid descent algorithm for finding a common point in fixed‐point sets of quasi‐nonexpansive mappings and solution sets of variational inequality problems. In the framework of Hilbert spaces, the strong convergence of the hybrid descent algorithm is established. Numerical experiments for the bandwidth allocation, which demonstrate the effectiveness, performance, and convergence of the proposed algorithm, are provided.     

Weak convergence theorem for Lipschizian pseudocontraction semigroups in Banach spaces

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