Results 11 to 20 of about 108,606 (260)

A Theory for Interpolation of Metric Spaces

open access: yesAxioms
In this work, we develop an interpolation theory for metric spaces inspired by the real method of interpolation. These interpolation spaces preserve Lipschitz operators under certain conditions.
Robledo Mak’s Miranda Sette   +2 more
doaj   +2 more sources

Cyclic Mappings and Further Results in B-Metric-Like Spaces

open access: yesComplexity, 2021
Fixed point problem of many mappings has been widely studied in the research work of fixed point theory. The generalized metric space is one of the research objects of fixed point theory.
Shengquan Weng   +3 more
doaj   +1 more source

Neutrosophic Triplet Partial Bipolar Metric Spaces [PDF]

open access: yesNeutrosophic Sets and Systems, 2020
In this article, neutrosophic triplet partial bipolar metric spaces are obtained. Then some definitions and examples are given for neutrosophic triplet partial bipolar metric space. Based on these definitions, new theorems are given and proved.
Memet Şahin   +2 more
doaj   +1 more source

An effective version of definability in metric structures [PDF]

open access: yesAUT Journal of Mathematics and Computing, 2022
In this paper, a computably definable predicate in metric structures is defined and characterized. Then, it is proved that every separable infinite-dimensional Hilbert structure in an effectively presented language is computable.
Nazanin Roshandel Tavana
doaj   +1 more source

The relativistic uniform model: the metric of the covariant theory of gravitation inside a body

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021
In the paper, it has been established that the sum of stress-energy tensors of the electromagnetic and gravitational fields, the acceleration and the pressure ones inside a stationary uniform spherical body vanishes within the framework of relativistic ...
Fedosin Sergey
doaj   +1 more source

(In)equivalence of metric-affine and metric effective field theories

open access: yesThe European Physical Journal C, 2022
AbstractIn a geometrical approach to gravity the metric and the (gravitational) connection can be independent and one deals with metric-affine theories. We construct the most general action of metric-affine effective field theories, including a generic matter sector, where the connection does not carry additional dynamical fields.
Pradisi G., Salvio A.
openaire   +4 more sources

A geometrical representation of the quantum information metric in the gauge/gravity correspondence

open access: yesPhysics Letters B, 2022
We study a geometrical representation of the quantum information metric in the gauge/gravity correspondence. We consider the quantum information metric that measures the distance between the ground states of two theories on the field theory side, one of ...
Asato Tsuchiya, Kazushi Yamashiro
doaj   +1 more source

Transfinite methods in metric fixed-point theory

open access: yesAbstract and Applied Analysis, 2003
This is a brief survey of the use of transfinite induction in metric fixed-point theory. Among the results discussed in some detail is the author's 1989 result on directionally nonexpansive mappings (which is somewhat sharpened), a result of Kulesza and ...
W. A. Kirk
doaj   +1 more source

Torsion Wave Solutions in Yang-Mielke Theory of Gravity

open access: yesAdvances in High Energy Physics, 2015
The approach of metric-affine gravity initially distinguishes it from Einstein’s general relativity. Using an independent affine connection produces a theory with 10 + 64 unknowns. We write down the Yang-Mills action for the affine connection and produce
Vedad Pasic, Elvis Barakovic
doaj   +1 more source

Metric theory of nematoelastic shells [PDF]

open access: yesPhysical Review E, 2014
We consider three-dimensional reshaping of a thin nematoelastic film upon nematic-isotropic transition in the field of a charge one topological defect, leading to either cone or anticone (d-cone) shells. The analysis is based on the relation between the shell metric and the tensor order parameter under the assumption of no elastic deformation and ...
openaire   +3 more sources

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