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The problem of finding a point in the intersection of closed sets can be solved by the method of alternating projections and its variants. It was shown in earlier papers that for convex sets, the strategy of using quadratic programming (QP)…

最优化与控制 · 数学 2015-06-30 C. H. Jeffrey Pang

This paper establishes novel fixed point theorems for Kannan-type and Chatterjea-type mappings in probabilistic cone metric spaces. By integrating probabilistic distance functions with cone-valued structures, we generalize classical fixed…

泛函分析 · 数学 2025-09-10 Elvin Rada

This paper leverages a framework based on averaged operators to tackle the problem of tracking fixed points associated with maps that evolve over time. In particular, the paper considers the Krasnosel'skii-Mann method in a settings where:…

最优化与控制 · 数学 2020-01-09 Emiliano Dall'Anese , Andrea Simonetto , Andrey Bernstein

This paper presents new approaches to the fixed point property for nonexpansive mappings in L^1 spaces. While it is well-known that L^1 fails the fixed point property in general, we provide a complete and self-contained proof that…

泛函分析 · 数学 2025-09-15 Faruk Alpay , Hamdi Alakkad

This paper provides a fixed point theorem and iterative construction of a common fixed point for a general class of nonlinear mappings in the setup of uniformly convex hyperbolic spaces. We translate a multi-step iteration, essentially due…

泛函分析 · 数学 2013-12-23 Hafiz Fukhar-ud-din , Amna Kalsoom , Muhammad Aqeel Ahmad Khan

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 analyse convergence of projected fixed-point iteration on a Riemannian manifold of matrices with fixed rank. As a retraction method we use `projector splitting scheme'. We prove that the projector splitting scheme converges…

数值分析 · 数学 2016-04-08 Denis Kolesnikov , Ivan Oseledets

We generalize the classical K\"onig's and B\"ottcher's Theorems in complex dynamics to certain quasiregular mappings in the plane. Our approach to these results is unified in the sense that it does not depend on the local injectivity, or…

复变函数 · 数学 2023-08-21 Alastair N. Fletcher , Jacob Pratscher

Many practical optimization problems lack strong convexity. Fortunately, recent studies have revealed that first-order algorithms also enjoy linear convergences under various weaker regularity conditions. While the relationship among…

最优化与控制 · 数学 2026-02-05 Feng-Yi Liao , Lijun Ding , Yang Zheng

The aim of this paper in to introduce a large class of mappings, called {\it enriched Kannan mappings}, that includes all Kannan mappings and some nonexpansive mappings. We study the set of fixed points and prove a convergence theorem for…

泛函分析 · 数学 2019-09-06 Vasile Berinde , Mădălina Păcurar

In this paper we introduce an interlacing condition on the elements of a family of operators that allows us to gather together a number of results on fixed points and common fixed points for single and families of mappings defined on metric…

泛函分析 · 数学 2022-12-29 Rafael Espínola , Maria Japón , Daniel Souza

We introduce a weak asymptotic version of nonlinear contraction, termed \emph{asymptotic pointwise contraction}. For a mapping on a metric space, this notion requires the existence of a sequence of functions that dominate the distances…

泛函分析 · 数学 2026-04-15 Jie Shi

In many iterative optimization methods, fixed-point theory enables the analysis of the convergence rate via the contraction factor associated with the linear approximation of the fixed-point operator. While this factor characterizes the…

系统与控制 · 电气工程与系统科学 2022-06-22 Trung Vu , Raviv Raich

We introduce and investigate an iterative scheme for approximating common fixed point of a family of Bregman relatively-nonexpansive mappings in real reflexive Banach spaces. We prove strong convergence theorem of the sequence generated by…

泛函分析 · 数学 2017-07-27 Oladipo Abiodun Timoye , Enyinnaya Ekuma-Okereke

Motivated by the well-known cases of the real Hilbert ball and complete R-trees, being both particular cases of CAT(-1) spaces, we give an affirmative answer to the question of whether the geodesically boundedness property is a necessary…

度量几何 · 数学 2014-08-01 Bozena Piatek

Previous papers have shown the impact of partial convergence of discretized PDE on the accuracy of tangent and adjoint linearizations. A series of papers suggested linearization of the fixed point iteration used in the solution process as a…

数值分析 · 数学 2022-02-24 Emmett Padway , Dimitri Mavriplis

In this paper, we introduce two new modified inertial Mann Halpern and viscosity algorithms for solving fixed point problems. We establish strong convergence theorems under some suitable conditions. Finally, our algorithms are applied to…

最优化与控制 · 数学 2020-04-10 Bing Tan , Zheng Zhou , Songxiao Li

We develop a rigorous measure-theoretic framework for the analysis of fixed points of nonexpansive maps in the space $L^1(\mu)$, with explicit consideration of quantization errors arising in fixed-point arithmetic. Our central result shows…

泛函分析 · 数学 2025-09-16 Faruk Alpay , Hamdi Alakkad

Approximations of optimization problems arise in computational procedures and sensitivity analysis. The resulting effect on solutions can be significant, with even small approximations of components of a problem translating into large…

最优化与控制 · 数学 2022-08-10 Johannes O. Royset

This paper deals with a modifed iterative projection method for approximating a solution of hierarchical fixed point problems for nearly nonexpansive mappings. Some strong convergence theorems for the proposed method are presented under…

泛函分析 · 数学 2014-03-17 Ibrahim Karahan , Murat Ozdemir