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The rapid, massive growth of COVID-19 authors in the scientific literature
Royal 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
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Picard sequences in b-metric spaces [PDF]
Fixed Point Theory, 2020 © 2020, House of the Book of Science. All rights reserved. The purpose of this article is to provide much simpler and shorter proofs of some important results in the framework of b-metric spaces. Namely, we show that the given contractive condition implies b-Cauchyness of the corresponding Picard sequence.
Aleksić, Suzana +2 more
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On constructing almost complex Norden metric structures
AIMS Mathematics, 2022 For a given almost contact Norden metric structure on a smooth manifold M, one can obtain an almost complex Norden metric structure on M×R. In this work, we study this construction in details and give the relations between the classes of these structures.
Mehmet Solgun
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On the Geometry of Connections with Totally Skew-Symmetric Torsion on Manifolds with Additional Tensor Structures and Indefinite Metrics [PDF]
, 2010 This paper is a survey of results obtained by the authors on the geometry of connections with totally skew-symmetric torsion on the following manifolds: almost complex manifolds with Norden metric, almost contact manifolds with B-metric and almost ...
Gribachev, Kostadin +2 more
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Probabilistic b-metric spaces and nonlinear contractions [PDF]
Fixed Point Theory and Applications, 2017 AbstractThis work is for giving the probabilistic aspect to the knownb-metric spaces (Czerwik in Atti Semin. Mat. Fis. Univ. Modena 46(2):263-276, 1998), which leads to studying the fixed point property for nonlinear contractions in this new class of spaces.
Abderrahim Mbarki, Rachid Oubrahim
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Proinov type contractions on dislocated b-metric spaces [PDF]
Advances in Difference Equations, 2021 AbstractIn this paper, we improve the Proinov theorem by adding certain rational expressions to the definition of the corresponding contractions. After that, we prove fixed point theorems for these modified Proinov contractions in the framework of dislocated b-metric spaces.
Badr Alqahtani +3 more
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On canonical-type connections on almost contact complex Riemannian manifolds [PDF]
, 2014 We consider a pair of smooth manifolds, which are the counterparts in the even-dimensional and odd-dimensional cases. They are separately an almost complex manifold with Norden metric and an almost contact manifolds with B-metric, respectively.
Manev, Mancho
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Extended b-metric-preserving functions
, 2021 12 ...
Martinez, Reinaldo +1 more
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Multivalued fractals in b-metric spaces
Open 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
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Annals 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
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