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AN ITERATIVE PROCESS FOR FINDING APPROXIMATE SOLUTIONS TO NONLINEAR EQUATIONS OF STRONGLY ACCRETIVE OPERATORS 被引量:3
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作者 曾六川 《Numerical Mathematics A Journal of Chinese Universities(English Series)》 SCIE 1997年第2期132-141,共10页
In this paper, we investigate the Ishikawa iteration process in a p-uniformly smooth Banach space X. We prove that the Ishikawa iteration process converges strongly to the unique solution of the equation Tx=f when T i... In this paper, we investigate the Ishikawa iteration process in a p-uniformly smooth Banach space X. We prove that the Ishikawa iteration process converges strongly to the unique solution of the equation Tx=f when T is a Lipschitzian and strongly accretive operator frow X to X, or to the unique fixed point of T when T is a Lipschitzian and strictly pseudocontractive mapping from a nonempty closed convex subset K of X into itself. Our results are the extension and improvements of the earlier and recent results in this field. 展开更多
关键词 strongly accretive operators STRICTLY pseudocontractive mapping. p-vniformly SMOOTH BANACH space.
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ITERATIVE PROCESS TO -HEMICONTRACTIVE OPERATOR AND-STRONGLY ACCRETIVE OPERATOR EQUATIONS
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作者 丁协平 张红琳 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2000年第11期1256-1263,共8页
Let E be an arbitrary real Banach space and K be a nonempty closed convex subsets of E. Let T:K→K be a uniformly continuous _hemicontractive operator with bounded range and a n,b n,c n,a ′ n,b ′ n,c ′ n b... Let E be an arbitrary real Banach space and K be a nonempty closed convex subsets of E. Let T:K→K be a uniformly continuous _hemicontractive operator with bounded range and a n,b n,c n,a ′ n,b ′ n,c ′ n be sequences in [0,1] satisfying:ⅰ) a n+b n+c n=a ′ n+b ′ n+c ′ n=1. n≥0; ⅱ) lim b n= lim b ′ n= lim c ′ n= 0; ⅲ)∑∞n=0b n=∞; ⅳ) c n=o(b n). For any given x 0,u 0,v 0∈K, define the Ishikawa type iterative sequence x n as follows: x n+1 =a nx n+b nTy n+c nu n, y n=a ′ nx n+b ′ nTx n+c ′ nv n (n≥0), where u n and v n are bounded sequences in K. Then x n converges strongly to the unique fixed point of T. Related result deals with the convergence of Ishikawa type iterative sequence to the solution of _strongly accretive operator equations. 展开更多
关键词 strongly accretive operator _hemicontrictive operator Ishikawa type iterative sequence Banach space
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New iterative schemes for strongly relatively nonexpansive mappings and maximal monotone operators
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作者 WEI Li SU Yong-fu ZHOU Hai-yun 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2010年第2期199-208,共10页
In this paper, some new iterative schemes for approximating the common element of the set of fixed points of strongly relatively nonexpansive mappings and the set of zero points of maximal monotone operators in a real... In this paper, some new iterative schemes for approximating the common element of the set of fixed points of strongly relatively nonexpansive mappings and the set of zero points of maximal monotone operators in a real uniformly smooth and uniformly convex Banach space are proposed. Some weak convergence theorems are obtained, which extend and complement some previous work. 展开更多
关键词 strongly relatively nonexpansive mapping maximal monotone operator zero point fixed point weak convergence.
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Iterative convergence theorems for maximal monotone operators and relatively nonexpansive mappings 被引量:5
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作者 WEI Li SU Yong-fu ZHOU Hai-yun 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2008年第3期319-325,共7页
In this paper, some iterative schemes for approximating the common element of the set of zero points of maximal monotone operators and the set of fixed points of relatively nonexpansive mappings in a real uniformly sm... In this paper, some iterative schemes for approximating the common element of the set of zero points of maximal monotone operators and the set of fixed points of relatively nonexpansive mappings in a real uniformly smooth and uniformly convex Banach space are proposed. Some strong convergence theorems are obtained, to extend the previous work. 展开更多
关键词 maximal monotone operator relatively nonexpansive mapping strong convergence zero point fixed point
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A Note on Iterative Solutions of Nonlinear Accretive Operator Equations 被引量:1
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作者 张国伟 《Northeastern Mathematical Journal》 CSCD 2000年第4期459-462,共4页
Suppose that X is a real Banach space, H: X→X is a Lipschitz operator, T: X→X is a uniformly continuous operator with bounded range, and H+T is strongly accretive. Then the Ishikawa iteration process... Suppose that X is a real Banach space, H: X→X is a Lipschitz operator, T: X→X is a uniformly continuous operator with bounded range, and H+T is strongly accretive. Then the Ishikawa iteration process converges strongly to the unique solution of the equation Hx+Tx=f . This conclusion extends the corresponding results in recent papers. 展开更多
关键词 Ishikawa iteration strongly accretive operator Lipschitz operator
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On the Characteristics of the Convergence of Ishikawa Type Iterative Sequences for Strong Pseudocontractions and Strongly Accretive Operators
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作者 曾六川 《Journal of Mathematical Research and Exposition》 CSCD 北大核心 2003年第3期403-409,共7页
In this paper, the results characterize the convergence of Ishikawa type iterative sequences (with errors) for constructing the solutions of strongly accretive operator equations, the solutions of rn-accretive operato... In this paper, the results characterize the convergence of Ishikawa type iterative sequences (with errors) for constructing the solutions of strongly accretive operator equations, the solutions of rn-accretive operator equations, and the fixed points of strong pseudocontractions. These results extend and improve Theorems 1-3 of Chidume and Osilike (Nonlinear Anal. TMA, 1999, 36(7): 863-872). 展开更多
关键词 Ishikawa type iterative sequences strong pseudocontractions strongly accretive operators arbitrary Banach spaces.
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ITERATIVE APPROXIMATION WITH ERRORS OF FIXED POINT FOR A CLASS OF NONLINEAR OPERATOR WITH A BOUNDED RANGE
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作者 薛志群 周海云 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 1999年第1期99-104,共6页
Let X be a uniformly smooth real Banach space. tri T:X→X be a con-tinuous and strongly accretive operator. For a given f∈X,define S: X→X by 1)satisfying: Moreover, suppose that {Sxn} and {Syn} are bounded, then {Xn... Let X be a uniformly smooth real Banach space. tri T:X→X be a con-tinuous and strongly accretive operator. For a given f∈X,define S: X→X by 1)satisfying: Moreover, suppose that {Sxn} and {Syn} are bounded, then {Xn} converges strongly to the unique fixed point of S. 展开更多
关键词 UNIFORMLY smooth real BANACH spaces ISHIKAWA iteration with ERRORS strongly accretive operator
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A Note on Modified Mann Accretive Iterations for Zero Points of Operators
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作者 WEI Li ZHOU Hai Yan 《Journal of Mathematical Research and Exposition》 CSCD 2009年第1期52-56,共5页
A more general form of modified Mann iterations which converges strongly to a zero point of an m-accretive operator is given. The work in this paper is an extension and complement of the corresponding result of Kim T.... A more general form of modified Mann iterations which converges strongly to a zero point of an m-accretive operator is given. The work in this paper is an extension and complement of the corresponding result of Kim T.H. and Xu H.K in 2005 展开更多
关键词 accretive operator zero point strong convergence.
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Banach空间中关于m-增生算子零点的一种新的粘性隐式迭代算法 被引量:1
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作者 潘灵荣 王元恒 《应用数学》 北大核心 2023年第3期640-651,共12页
在Banach空间中研究关于两个逆强增生算子的一般变分不等式问题和m-增生算子零点的粘性隐式迭代算法,对参数的适当限制下,利用超梯度方法,得到了若干强收敛定理,推广和改进了其他相关作者的主要结果.
关键词 BANACH空间 M-增生算子 变分不等式 强收敛
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Banach空间中关于m-增生算子零点的黏性隐式迭代序列的强收敛定理
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作者 潘灵荣 王元恒 《贵州大学学报(自然科学版)》 2023年第3期11-17,29,共8页
在自反一致凸Banach空间中,构造了一种关于m-增生算子零点的隐性黏滞迭代序列,在合适的参数条件下,证明了该迭代序列的强收敛定理,所得结论改进和推广了一些相关文献的主要结果。
关键词 BANACH空间 M-增生算子 黏性隐式方法 强收敛 变分不等式
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任意Banach空间中的非线性Lipschitz强伪压缩算子不动点的迭代逼近 被引量:2
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作者 刘俊先 马建珍 《南昌大学学报(理科版)》 CAS 北大核心 2008年第1期25-27,共3页
在任意Banach空间中,对非线性增生和强伪压缩算子方程引入三重迭代程序,在Lipschitz条件下研究其收敛性问题.把一重及二重迭代推广到三重迭代,使得[5]和[1]成了本文的推论。
关键词 强增生 强伪压缩算子 三重迭代 ISHIKAWA迭代 MANN迭代
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极小全变分流第一边值问题弱解的存在性 被引量:1
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作者 芮杰 杨孝平 《数学物理学报(A辑)》 CSCD 北大核心 2011年第4期958-969,共12页
该文利用Crandall-Liggett半群定理和完全增长算子的性质,得到初始值属于L^1(Ω)的非齐次发展方程第一边值问题弱解的存在性.
关键词 完全增长算子 半群解 强解 弱解
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一类非线性算子Ishikawa迭代序列的强收敛定理 被引量:4
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作者 谷峰 《数学物理学报(A辑)》 CSCD 北大核心 2001年第1期102-109,共8页
使用新的分析技巧。研究了一致光滑Banach空间中强增增算子方程的解和强伪压缩算子不动点的Ishikawa迭代逼近问题,改进和扩展了近期的许多相关结果.
关键词 Φ-强增生算子 φ-强伪压缩算子 ISHIKAWA迭代序列 强收敛定理 非线性算子
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关于m-增生算子零点的粘性复合迭代序列的强收敛性 被引量:1
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作者 王元恒 潘灵荣 《应用数学》 CSCD 北大核心 2009年第4期863-869,共7页
在一致光滑的Banach空间的框架下,引入关于m-增生算子的一种新粘性复合迭代序列{xn},并证明了在适当的控制条件下,此迭代序列强收敛于m-增生算子的一个零点,用不同方法推广了相关文献的近代结果.
关键词 M-增生算子 复合迭代序列 强收敛性 一致光滑BANACH空间
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α-强增生算子零点的迭代逼近 被引量:3
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作者 周海云 《数学年刊(A辑)》 CSCD 北大核心 2006年第3期383-388,共6页
提要设E为一致光滑Banach空间,A:E→E为有界次连续α-强增生算子满足:对某x0∈E,lim↑-↑r→∞α(r)〉||Ax0||.设{C^n}为[0,1]中数列满足控制条件,(i)Cn→0(n→∞);(ii)∞↑∑↑n=0Cn=∞.设{xn}n≥0由下式产生:xn... 提要设E为一致光滑Banach空间,A:E→E为有界次连续α-强增生算子满足:对某x0∈E,lim↑-↑r→∞α(r)〉||Ax0||.设{C^n}为[0,1]中数列满足控制条件,(i)Cn→0(n→∞);(ii)∞↑∑↑n=0Cn=∞.设{xn}n≥0由下式产生:xn+1=xn-CnAxn,n≥0,(@)则存在常数q〉0,当Cn〈α时,{xn}强收敛于A的唯一零点x^*。 展开更多
关键词 α-强增生算子 最速下降法 改进的Reich不等式 强收敛
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增生算子迭代法与收缩半群强收敛的充要条件 被引量:1
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作者 倪仁兴 《高校应用数学学报(A辑)》 CSCD 北大核心 2000年第4期433-439,共7页
在一定条件下 ,证明了增生算子的预解式迭代法强收敛于零点的充要条件 ,以及非线性收缩半群强收敛于平衡点的充要条件 .这些与蒋耀林等人 (1 994年 )所获得的相应弱收敛充要条件相对应 .
关键词 增生算子 预解式迭代法 非线性收缩半群 强收敛 充要条件
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增生型非线性方程具误差的Ishikawa迭代方法
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作者 吴长刚 杨春宏 刘惠清 《河北师范大学学报(自然科学版)》 CAS 北大核心 2010年第4期394-397,共4页
设E是任意Banach空间,T:E→E是Lipschitz强增生算子,研究了此类现象的具误差的Ishikawa迭代方法的收敛性问题.改进后的Ishikawa迭代方法强收敛到算子方程Tx=f的唯一解.
关键词 增生算子 具误差的Ishikawa迭代 强收敛
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关于m-增生算子的Ishikawa迭代程序的收敛性与稳定性(英文)
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作者 王学武 《应用数学》 CSCD 北大核心 2009年第1期155-160,共6页
在任意的Banach空间的条件下,具误差的Ishikawa迭代程序强收敛到非线性方程x+Tx=f的唯一解并且是几乎稳定的.其结果推广、改进和统一了Zeng和Liu的相关结果.
关键词 具误差的Ishikawa迭代程序 M-增生算子 强收敛 几乎稳定
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Hilbert空间中一类伪压缩型变分包含解的迭代逼近
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作者 阿力非日 何中全 《绵阳师范学院学报》 2011年第5期4-11,43,共9页
在Hilbert空间中引入和研究了关于(A,η)-单调算子的一类伪压缩型变分包含问题,并证明了这类变分包含问题在实的Hilbert空间中给出了用于求这类变分包含解解的带误差的Ishikawa迭代程序的收敛性分析。该文的工作改进和推广了文献[1][4]... 在Hilbert空间中引入和研究了关于(A,η)-单调算子的一类伪压缩型变分包含问题,并证明了这类变分包含问题在实的Hilbert空间中给出了用于求这类变分包含解解的带误差的Ishikawa迭代程序的收敛性分析。该文的工作改进和推广了文献[1][4][5]中已知的相关结果。 展开更多
关键词 变分包含 k-次伪压缩 m-增生映像 带误差的Ishikawa迭代 (A η)-单调算子 强性收敛
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Stable Perturbed Algorithms for a New Class of Generalized Nonlinear Implicit Quasi Variational Inclusions in Banach Spaces 被引量:2
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作者 Salahuddin Salahuddin Mohammad Kalimuddin Ahmad 《Advances in Pure Mathematics》 2012年第3期139-148,共10页
In this work, a new class of variational inclusion involving T-accretive operators in Banach spaces is introduced and studied. New iterative algorithms for stability for their class of variational inclusions and its c... In this work, a new class of variational inclusion involving T-accretive operators in Banach spaces is introduced and studied. New iterative algorithms for stability for their class of variational inclusions and its convergence results are established. 展开更多
关键词 T-accretive operators VARIATIONAL INCLUSIONS Iterative Algorithms Stability Conditions Convergence strong accretivity BANACH Spaces
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