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In this paper, we study the existence of the random approximations and fixed points for random almost lower semicontinuous operators defined on finite dimensional Banach spaces, which in addition, are condensing or 1-set-contractive. Our…

概率论 · 数学 2015-07-13 Monica Patriche

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 relatively nonexpansive mappings in a Banach space. Our results…

泛函分析 · 数学 2014-10-16 Sattar Alizadeh , Fridoun Moradlou

Consider the problem of finding a zero of a finite sum of maximally monotone operators, where some operators are Lipschitz continuous and the rest are potentially set-valued. We propose a forward-backward-type algorithm for this problem…

最优化与控制 · 数学 2025-12-16 Matthew K Tam , Liam Timms , Lele Zhang

All most all the function spaces over real or complex domains and spaces of sequences, that arise in practice as examples of normed complete linear spaces (Banach spaces), are reflexive. These Banach spaces are dual to their respective…

综合数学 · 数学 2022-03-01 Michael Oser Rabin , Duggirala Ravi

We study the alternating algorithm for the computation of the metric projection onto the closed sum of two closed subspaces in uniformly convex and uniformly smooth Banach spaces. For Banach spaces which are convex and smooth of power type,…

泛函分析 · 数学 2020-10-09 Christian Bargetz , Emir Medjic

This paper is focused on some properties of paramonotone operators on Banach spaces and their application to certain feasibility problems for convex sets in a Hilbert space and convex systems in the Euclidean space. In particular, it shows…

最优化与控制 · 数学 2023-07-04 J. Camacho , M. J. Cánovas , J. E. Martínez-Legaz , J. Parra

In this paper, we study the strong convergence of two Mann-type inertial extragradient algorithms, which are devised with a new step size, for solving a variational inequality problem with a monotone and Lipschitz continuous operator in…

最优化与控制 · 数学 2021-07-27 Bing Tan , Jingjing Fan , Songxiao Li

The main goal of this paper is to show how some monotonicity methods related with the subdifferential of suitable convex functions and its extensions as m-accretive operators in Banach spaces lead to new and unexpected results showing, for…

偏微分方程分析 · 数学 2019-10-10 Jesus Ildefonso Diaz

We formalize the observation that the same summability methods converge in a Banach space $X$ and its dual $X^*$. At the same time we determine conditions under which these methods converge in the weak and weak*-topologies on $X$ and $X^*$…

泛函分析 · 数学 2023-02-15 Soumitra Ghara , Javad Mashreghi , Thomas Ransford

We consider the problem of recovering a real-valued $n$-dimensional signal from $m$ phaseless, linear measurements and analyze the amplitude-based non-smooth least squares objective. We establish local convergence of subgradient descent…

机器学习 · 计算机科学 2021-08-31 Paul Hand , Oscar Leong , Vladislav Voroninski

We obtain several new results on the simultaneous packing and covering constant $\gamma(\mathcal{X})$ of a Banach space $\mathcal{X}$, and its lattice counterpart $\gamma^*(\mathcal{X})$. These constants measure how efficient a (lattice)…

泛函分析 · 数学 2026-02-19 Carlo Alberto De Bernardi , Tommaso Russo , Şeyda Sezgek , Jacopo Somaglia

In this paper, we introduce three novel splitting algorithms for solving structured monotone inclusion problems involving the sum of a maximally monotone operator, a monotone and Lipschitz continuous operator and a cocoercive operator. Each…

最优化与控制 · 数学 2025-11-19 Liqian Qin , Aviv Gibali , Cuijie Zhang , Yuchao Tang

We formulate bang-bang, purification, and minimization principles in dual Banach spaces with Gelfand integrals and provide a complete characterization of the saturation property of finite measure spaces. We also present a new application of…

泛函分析 · 数学 2017-05-05 Nobusumi Sagara

In this paper, we survey recent progress on the theory of maximally monotone operators in general Banach space. We also extend various of the results and leave some open questions.

泛函分析 · 数学 2013-07-23 Jonathan M. Borwein , Liangjin Yao

We propose and study the weak convergence of a projective splitting algorithm for solving multi-term composite monotone inclusion problems involving the finite sum of $n$ maximal monotone operators, each of which having an inner four-block…

最优化与控制 · 数学 2024-05-08 M. Marques Alves

It is well known that the projection method is not convergent for monotone equilibrium problems. Recently Sosa \textit{et al.} in \cite{SS2011} proposed a projection algorithm ensuring convergence for paramonotone equilibrium problems. In…

最优化与控制 · 数学 2018-04-30 Le Dung Muu , Phung Minh Duc , Xuan Thanh Le

Machine learning approaches relying on such criteria as adversarial robustness or multi-agent settings have raised the need for solving game-theoretic equilibrium problems. Of particular relevance to these applications are methods targeting…

机器学习 · 计算机科学 2023-10-27 Xufeng Cai , Ahmet Alacaoglu , Jelena Diakonikolas

We give a self-contained and introductory account of some basic functional analytic tools needed to understand maximal monotone operators in Hilbert spaces. We review domains of (possibly unbounded) operators, closed sets and closed…

泛函分析 · 数学 2025-12-02 Hikmatullo Ismatov

Contraction rates of time-varying maps induced by dynamical systems illuminate a wide range of asymptotic properties with applications in stability analysis and control theory. In finite-dimensional smoothly varying inner-product spaces…

动力系统 · 数学 2022-01-11 Anand Srinivasan , Jean-Jacques Slotine

We are concerned with surjectivity of perturbations of maximal monotone operators in non-reflexive Banach spaces. While in a reflexive setting, a classical surjectivity result due to Rockafellar gives a necessary and sufficient condition to…

泛函分析 · 数学 2008-05-30 M. Marques Alves , B. F. Svaiter