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Using the technique of enrichment of contractive type mappings by Krasnoselskij averaging, presented here for the first time, we introduce and study the class of {\it enriched nonexpansive mappings} in Hilbert spaces. In order to…

泛函分析 · 数学 2019-09-06 Vasile Berinde

In this paper, we introduce a new contraction condition that combines the framework of Singh's extension with the classical Chatterjea contraction. This generalized form, called the Singh-Chatterjea contraction, is defined on the p-th…

泛函分析 · 数学 2025-10-15 Zouaoui Bekri , Nicola Fabiano

In this paper, we present the Brouwer-Schauder-Tychonoff fixed point theorem on locally convex spaces as the following extension and improvement: Suppose that S is a compact star-shaped subset with respect to p in S with its convexity index…

泛函分析 · 数学 2026-02-11 Lixin Cheng , Chulei Liu , Wen Zhang

The notion of a (metric) modular on an arbitrary set and the corresponding modular space, more general than a metric space, were introduced and studied recently by the author [V. V. Chistyakov, Metric modulars and their application, Dokl.…

泛函分析 · 数学 2013-05-29 Vyacheslav V. Chistyakov

We introduce the concept of shifting distance functions, and we establish a new fixed point theorem which generalizes the Banach contraction principle. An example is provided to illustrate our result.

经典分析与常微分方程 · 数学 2013-10-04 Maher Berzig

In this paper, we introduce the cone normed spaces and cone bounded linear mappings. Among other things, we prove the Baire category theorem and the Banach--Steinhaus theorem in cone normed spaces.

泛函分析 · 数学 2009-12-08 M. Eshaghi Gordji , M. Ramezani , H. Baghani , H. Khodaei

Geodesic contraction in vector-valued differential equations is readily verified by linearized operators which are uniformly negative-definite in the Riemannian metric. In the infinite-dimensional setting, however, such analysis is…

动力系统 · 数学 2022-08-12 Anand Srinivasan , Jean-Jacques Slotine

We present a general fixed point theorem which can be seen as the quintessence of the principles of proof for Banach's Fixed Point Theorem, ultrametric and certain topological fixed point theorems. It works in a minimal setting, not…

交换代数 · 数学 2013-04-02 Katarzyna Kuhlmann , Franz-Viktor Kuhlmann

We study the weakest convergence-type conditions for fixed point results for Banach and Kannan mappings. Building on Suzuki's weakest condition for Banach mappings and our previous result for Kannan mappings, we compare convergence…

泛函分析 · 数学 2026-05-13 Shunya Hashimoto , Misako Kikkawa , Shuji Machihara , Aqib Saghir

We introduce the concept of $b$-suprametric spaces and establish a fixed point result for mappings satisfying a nonlinear contraction in such spaces. The obtained result generalizes a fixed point theorem of Czerwik and a recent result of…

综合数学 · 数学 2024-10-24 Maher Berzig

In this paper, we prove coincidence and common fixed points results under nonlinear contractions on a metric space equipped with an arbitrary binary relation. Our results extend, generalize, modify and unify several known results especially…

综合数学 · 数学 2017-05-09 Md Ahmadullah , Mohammad Imdad , Mohammad Arif

The paper gives some results on best proximity and fixed point for a class of generalized hybrid cyclic self-mappings in Banach spaces.

泛函分析 · 数学 2012-12-27 M. De la Sen

The aim of this paper is to generalize some fixed point theorems in the class of convex contraction of order $m$ on a complete suprametric space. Then, we will prove that the class of convex contraction of order m is strong enough to…

综合数学 · 数学 2026-05-11 Nicola Fabiano , Sedigheh Barootkoob , Hossein Lakzian

We have derived that on certain Banach spaces having a graph structure $G$, the iterations for asymptotically $G$-nonexpansive map will converge weakly towards a fixed point. This result unifies and extends several theorems on fixed points…

泛函分析 · 数学 2022-02-28 Asrifa Sultana

In this paper, we introduce a new general framework, called \emph{perturbed extended $b$-metric spaces}, denoted by $(X,\mathcal{D}_{\zeta},\hbar)$, which extends the classical and extended $b$-metric structures through the inclusion of an…

最优化与控制 · 数学 2025-12-29 Abdelhamid Moussaoui

In Theorem 1 of the paper [V. Pata, A fixed point theorem in metric spaces, J. Fixed Point Theory Appl., 10 (2011), 299-305] it is proved that Picard's iterates for a function converge to a fixed point if a certain condition (C) is verified…

泛函分析 · 数学 2020-03-24 Constantin Zalinescu

In this article, we extend several relation-theoretic notions to topological spaces. We introduce relation preserving contraction mapping into topological spaces and utilize the same to extend Banach contraction principle in topological…

综合数学 · 数学 2025-09-16 Md Hasanuzzaman , Abhishikta Das , Sumit Som

We show that the super fixed point property for nonexpansive mappings and for asymptotically nonexpansive mappings in the intermediate sense are equivalent. As a consequence, we obtain fixed point theorems for asymptotically nonexpansive…

泛函分析 · 数学 2015-11-24 Andrzej Wiśnicki

In this paper, we discuss the existence of fixed points for integral type contractions in uniform spaces endowed with both a graph and an $E$-distance. We also give two sufficient conditions under which the fixed point is unique. Our main…

一般拓扑 · 数学 2013-06-03 Aris Aghanians , Kourosh Nourouzi

In this paper, we investigate the existence and uniqueness of fixed point for partially ordered contraction type operators in Banach Space. We also present applications to integral and differential equations.

泛函分析 · 数学 2017-10-17 Jinxiu Mao , Zengqin Zhao