Results 31 to 40 of about 1,106 (150)

On multivalued Suzuki-type θ-contractions and related applications

open access: yesOpen Mathematics, 2020
In this study, we develop the concept of multivalued Suzuki-type θ-contractions via a gauge function and established two new related fixed point theorems on metric spaces. We also discuss an example to validate our results.
Ali Amjad   +5 more
doaj   +1 more source

A system of additive functional equations in complex Banach algebras

open access: yesDemonstratio Mathematica, 2023
In this article, we solve the system of additive functional equations: 2f(x+y)−g(x)=g(y),g(x+y)−2f(y−x)=4f(x)\left\{\phantom{\rule[-1.25em]{}{0ex}}\begin{array}{l}2f\left(x+y)-g\left(x)=g(y),\\ g\left(x+y)-2f(y-x)=4f\left(x)\end{array}\right.
Paokanta Siriluk   +3 more
doaj   +1 more source

Coincidence Best Proximity Points of Proximal Berinde G‐Contractions

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
Recently, a concept of proximal Berinde contractions was introduced and applied to prove the existence of coincidence best proximity points in metric spaces. In this article, we established a new approach to show that these results can be obtained from a fixed point theorem for multivalued (β, L)‐weak contractions.
Moosa Gabeleh, Jack Markin, Dengfeng Lu
wiley   +1 more source

Corrigendum to “On Fixed Point Property under Lipschitz and Uniform Embeddings”

open access: yes, 2019
Journal of Function Spaces, Volume 2019, Issue 1, 2019.
Jichao Zhang, Lingxin Bao, Lili Su
wiley   +1 more source

KKM and KY fan theorems in modular function spaces

open access: yesFixed Point Theory and Applications, 2011
In modular function spaces, we introduce Knaster-Kuratowski-Mazurkiewicz mappings (in short KKM-mappings) and prove an analogue to Ky Fan s fixed point theorem. 2010 Mathematics Subject Classification: Primary 46B20, 47H09; Secondary 47H10.
Latif Abdul   +2 more
doaj  

A study of the absence of arbitrage opportunities without calculating the risk-neutral probability

open access: yesActa Universitatis Sapientiae: Mathematica, 2016
In this paper, we establish the property of conditional full support for two processes: the Ornstein Uhlenbeck and the stochastic integral in which the Brownian Bridge is the integrator and we build the absence of arbitrage opportunities without ...
Dani S., Kandouci A.
doaj   +1 more source

Equivalents of maximum principles for several spaces

open access: yesTopological Algebra and its Applications, 2022
According to our long-standing Metatheorem, certain maximum theorems can be equivalently reformulated to various types of fixed point theorems, and conversely.
Park Sehie
doaj   +1 more source

Coincidence Point Results for Self‐Mapping With Extended Rational Contraction in Partially Ordered Ultrametric Spaces Using p‐Adic Distance

open access: yesJournal of Mathematics, Volume 2024, Issue 1, 2024.
This paper aims to investigate new coincidence point theorems for self‐maps under an extended rational contraction. Our approach uses the p‐adic distance in partially ordered ultrametric spaces. Furthermore, to illustrate our major discoveries, we give a comprehensive numerical analysis.
Balaanandhan Radhakrishnan   +7 more
wiley   +1 more source

A minimax inequality and its applications to fixed point theorems in CAT(0) spaces

open access: yesFixed Point Theory and Applications, 2011
In this paper, a CAT(0) version of famous Fan's minimax inequality is established and as its application, we obtain some fixed point theorems and best approximation theorems in CAT(0) spaces. 2000 Mathematics Subject Classification: 47H10.
Shabanian S, Vaezpour SM
doaj  

A note on the paper “Contraction mappings in b-metric spaces” by Czerwik

open access: yesActa Universitatis Sapientiae: Mathematica, 2018
In this paper we correct an inaccuracy that appears in the proof of Theorem 1. in Czerwik [1].
Kajántó S., Lukács A.
doaj   +1 more source

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