Results 21 to 30 of about 10,260,018 (297)

On Metric-Type Spaces Based on Extended T-Conorms

open access: yesMathematics, 2020
Kirk and Shahzad introduced the class of strong b-metric spaces lying between the class of b-metric spaces and the class of metric spaces. As compared with b-metric spaces, strong b-metric spaces have the advantage that open balls are open in the induced
Tarkan Öner, Alexander Šostak
doaj   +1 more source

On interpolative contractions that involve rational forms

open access: yesAdvances in Difference Equations, 2021
The aim of this paper is to investigate the interpolative contractions involving rational forms in the framework of b-metric spaces. We prove the existence of a fixed point of such a mapping with different combinations of the rational forms.
Andreea Fulga
doaj   +1 more source

A Note on Extended Z-Contraction

open access: yesMathematics, 2020
In this article, we aim to evaluate and merge the as-scattered-as-possible results in fixed point theory from a general framework. In particular, we considered a common fixed point theorem via extended Z-contraction with respect to ψ ...
Maryam A. Alghamdi   +2 more
doaj   +1 more source

The rapid, massive growth of COVID-19 authors in the scientific literature

open access: yesRoyal Society Open Science, 2021
We examined the extent to which the scientific workforce in different fields was engaged in publishing COVID-19-related papers. According to Scopus (data cut, 1 August 2021), 210 183 COVID-19-related publications included 720 801 unique authors, of which
John P. A. Ioannidis   +3 more
doaj   +1 more source

Sehgal Type Contractions on b-Metric Space [PDF]

open access: yesSymmetry, 2018
In this paper, we analyze two discontinuous self-mappings that satisfy Sehgal-type inequalities in the setup of complete b-metric space. The main results of the paper cover and extend a few existing results in the corresponding literature. Furthermore, we give some illustrative examples to verify the effectiveness and strength of our derived results ...
Badr Alqahtani   +2 more
openaire   +2 more sources

UNIQUE FIXED POINT THEOREMS FOR CONTRACTIVE MAPS TYPE IN T 0 -QUASI-METRIC SPACES [PDF]

open access: yes, 2014
In [2], Agyingi proved that every generalized contractive mapping defined in a q-spherically complete T 0 -ultra-quasi-metric space has a unique fixed point.
Yae ́ Ulrich Gaba
core   +1 more source

On Fixed Point Results in Gb-Metric Spaces

open access: yesMathematics, 2019
The purpose of this paper is to consider various results in the context of G b -metric spaces that have been recently published after the paper (Aghajani, A.; Abbas, M.; Roshan, J.R.
Hassen Aydi   +5 more
doaj   +1 more source

A new properties of fuzzy b-metric spaces

open access: yesIndonesian Journal of Electrical Engineering and Computer Science, 2022
Metric <span lang="EN-US">spaces are specific types of topological spaces with pleasing “geometric” characteristics and they have a number of appealing properties and are commonly used in both pure and applied sciences. In this work, the structure of cartesian product space in the setting of a fuzzy b-metric space (Fb-M space) framework is ...
Ali, Mayada Nazar Mohammed   +2 more
openaire   +1 more source

Multivalued fractals in b-metric spaces

open access: yesOpen Mathematics, 2010
Abstract Fractals and multivalued fractals play an important role in biology, quantum mechanics, computer graphics, dynamical systems, astronomy and astrophysics, geophysics, etc. Especially, there are important consequences of the iterated function (or multifunction) systems theory in several topics of applied sciences. It is known that
Boriceanu, Monica   +2 more
openaire   +2 more sources

Almost Contact B-metric Manifoldsas Extensions of a 2-dimensional Space-form [PDF]

open access: yes, 2016
summary:The object of investigations are almost contact B-metric manifolds which are derived as a product of a real line and a 2-dimensional manifold equipped with a complex structure and a Norden metric.
Manev, Hristo M.
core   +1 more source

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