Results 21 to 30 of about 12,679,286 (241)

Interpreting the C-metric [PDF]

open access: yes, 2006
The basic properties of the C-metric are well known. It describes a pair of causally separated black holes which accelerate in opposite directions under the action of forces represented by conical singularities.
P. Krtous (7160315)   +2 more
core   +6 more sources

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   +3 more sources

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

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

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

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

Convexity in quasi-metric spaces [PDF]

open access: yes, 2012
Includes abstract.Includes bibliographical references.The principal aim of this thesis is to investigate the existence of an injective hull in the categories of T-quasi-metric spaces and of T-ultra-quasi-metric spaces with nonexpansive ...
Otafudu, Olivier Olela
core   +1 more source

Teori Titik Tetap untuk Tipe Kannan yang Diperumum dalam Ruang b-Metrik Modular Lengkap

open access: yesJambura Journal of Mathematics, 2023
Some generalizations of Banach's contraction principle, which is a fixed-point theorem for contraction mapping in metric spaces, have developed rapidly in recent years.
Afifah Hayati   +2 more
doaj   +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

Fixed Point Results for Generalized Contraction Mappings and Cyclical Mappings in b-Metric Spaces Endowed with a Digraph

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2019
In this paper, we establish a fixed point theorem for generalized contraction mappings in b-metric spaces endowed with a digraph. As an application of this result, we obtain fixed points of cyclical mappings in the setting of b-metric spaces. Our results
Mohanta Sushanta Kumar, Biswas Deep
doaj   +1 more source

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