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We develop a framework for quantitative convergence analysis of Picard iterations of expansive set-valued fixed point mappings. There are two key components of the analysis. The first is a natural generalization of single-valued averaged…

最优化与控制 · 数学 2018-09-24 D. Russell Luke , Nguyen H. Thao , Matthew K. Tam

We study nearly equal and nearly convex sets, ranges of maximally monotone operators, and ranges and fixed points of convex combinations of firmly nonexpansive mappings. The main result states that the range of an average of firmly…

泛函分析 · 数学 2011-05-03 Heinz H. Bauschke , Sarah M. Moffat , Xianfu Wang

In this paper, we prove the existence of fixed points of mappings satisfying the condition (Da), a kind of generalized nonexpansive mappings, on a weakly compact convex subset in a Banach space satisfying Opial's condition. And we use…

泛函分析 · 数学 2020-07-07 Chang Il Rim , Jong Gyong Kim

In this paper, we introduce a new modified Ishikawa iteration for finding a common element of the set of solutions of an equilibrium problem and the set of fixed points of generalized hybrid mappings in a Hilbert space. Our results…

泛函分析 · 数学 2014-10-21 Sattar Alizadeh , Fridoun Moradlou

In this paper, we present new results on holomorphically accretive mappings and their resolvents defined on the open unit ball of a complex Banach space. We employ a unified approach to examine various properties of non-linear resolvents by…

复变函数 · 数学 2024-06-06 Mark Elin

We establish sharp estimates for the convergence rate of the Kranosel'ski\v{\i}-Mann fixed point iteration in general normed spaces, and we use them to show that the asymptotic regularity bound recently proved in [11] (Israel Journal of…

最优化与控制 · 数学 2017-01-31 Mario Bravo , Roberto Cominetti

We study Krasnoselskii-Mann style iterative algorithms for approximating fixpoints of asymptotically weakly contractive mappings, with a focus on providing generalised convergence proofs along with explicit rates of convergence. More…

泛函分析 · 数学 2021-04-30 Thomas Powell , Franziskus Wiesnet

We extend to $p$-uniformly convex spaces tools from the analysis of fixed point iterations in linear spaces. This study is restricted to an appropriate generalization of single-valued, pointwise $\alpha$-averaged mappings. Our main…

泛函分析 · 数学 2021-04-26 Arian Bërdëllima , Florian Lauster , D. Russell Luke

In this paper, we prove the strong convergence theorems for nearly nonexpansive mappings, using the modified Picard-Mann hybrid iteration process in the context of uniformly convex Banach space.

泛函分析 · 数学 2021-01-15 Adrian Ghiura

In this paper we propose new averaged iterative algorithms designed for solving a split common fixed-point problem in the class of demicontractive mappings. The algorithms are obtained by inserting an averaged term into the algorithms used…

综合数学 · 数学 2024-06-25 Vasile Berinde , Khairul Saleh

In this paper we establish an estimate for the rate of convergence of the Krasnosel'ski\v{\i}-Mann iteration for computing fixed points of non-expansive maps. Our main result settles the Baillon-Bruck conjecture [3] on the asymptotic…

最优化与控制 · 数学 2013-10-09 Roberto Cominetti , José A. Soto , José Vaisman

In this paper, we first introduce an iterative process in modular function spaces and then extend the idea of a {\lambda}-firmly nonexpansive mapping from Banach spaces to modular function spaces. We call such mappings as…

泛函分析 · 数学 2021-11-23 Safeer Hussain Khan

In this paper, a novel parallel hybrid iterative method is proposed for finding a common element of the set of solutions of a system of equilibrium problems, the set of solutions of variational inequalities for inverse strongly monotone…

最优化与控制 · 数学 2015-10-28 Dang Van Hieu

This paper provides a fixed point theorem for asymptotically nonexpansive mappings in uniformly convex hyperbolic spaces as well as new effective results on the Krasnoselski-Mann iterations of such mappings. The latter were found using…

泛函分析 · 数学 2008-03-26 Ulrich Kohlenbach , Laurentiu Leustean

In this note we point out that results on the asymptotic behaviour of an alternative iterative method are corollaries of corresponding results on the well-known Halpern iteration.

泛函分析 · 数学 2015-04-09 Laurentiu Leustean , Adriana Nicolae

In this work, we deal with an iteration method for approximating a fixed point of a contraction mapping using the Mann's algorithm under functional random errors. We first show its almost complete convergence to the fixed point by mean of…

概率论 · 数学 2017-01-24 Bahia Barache , Idir Arab , Abdelnasser Dahmani

Firstly, we invoke the weak convergence (resp. strong convergence) of translated basic methods involving nonexpansive operators to establish the weak convergence (resp. strong convergence) of the associated method with both perturbation and…

最优化与控制 · 数学 2022-03-29 Hui Ouyang

In this paper we generalize the strongly convergent Krasnoselskii- Mann-type iteration for families of nonexpansive mappings defined recently by Bo\c{t} and Meier in Hilbert spaces to the abstract setting of W - hyperbolic spaces and we…

最优化与控制 · 数学 2023-06-16 Horaţiu Cheval

In this work, we suggest a general viscosity implicit midpoint rule for nonexpansive mapping in the framework of Hilbert space. Further, under the certain conditions imposed on the sequence of parameters, strong convergence theorem is…

最优化与控制 · 数学 2016-09-21 Shuja Haider Rizvi

In this paper we prove the strong convergence of the explicit iterative process to a common fixed point of the finite family of nonexpansive mappings defined on Hilbert space, which solves the the variational inequality on the fixed points…

泛函分析 · 数学 2011-05-03 Farrukh Mukhamedov , Mansoor Saburov