Results 71 to 80 of about 1,022,933 (334)

Probing the presence of a single or binary black hole in the globular cluster NGC 6752 with pulsar dynamics

open access: yes, 2003
The five millisecond pulsars that inhabit NGC 6752 display locations or accelerations that are quite unusual compared to all other pulsars known in globular clusters. In particular PSR-A, a binary pulsar, lives in the cluster halo, while PSR-B and PSR-E,
Andrea Possenti   +7 more
core   +2 more sources

GREEN'S RELATIONS ON THE SEMIGROUP OF BINARY RELATIONS

open access: yesDemonstratio Mathematica, 1986
\(\beta\) \({}_ X\) is the semigroup of all binary relations on the set X. The author associates with certain binary relations, subrelations called right and left skeletons. He then determines whether or not the original relations are \({\mathcal L}\), \({\mathcal R}\), \({\mathcal D}\) or \({\mathcal J}\)-equivalent (where these represent, as usual ...
openaire   +2 more sources

The Impact of Tilburg Frailty on Poststroke Fatigue in First‐Ever Stroke Patients: A Cross‐Sectional Study With Unified Measurement Tools and Improved Statistics

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Poststroke fatigue (PSF) and frailty share substantial overlap in their manifestations, yet previous research has yielded conflicting results due to the use of heterogeneous frailty assessment tools. Objective To evaluate the independent impact of frailty on PSF using a unified measurement system (Tilburg Frailty Indicator, TFI ...
Chuan‐Bang Chen   +6 more
wiley   +1 more source

New Studies for Dynamic Programming and Fractional Differential Equations in Partial Modular b-Metric Spaces

open access: yesFractal and Fractional
This study explores innovative insights into the realms of dynamic programming and fractional differential equations, situated explicitly within the framework of partial modular b-metric spaces enriched with a binary relation R, proposing a novel ...
Abdurrahman Büyükkaya   +3 more
doaj   +1 more source

Common Fixed Point Theorems for Generalized Contractive Pair of Mappings in a Metric Space and Their Application to Fractional Calculus

open access: yesJournal of Applied Mathematics, 2022
In this manuscript, we have established relation-theoretic version of some common fixed point results in metric space for generalized β−ϕ−Z-contractive pair of mappings furnished with an arbitrary binary relation R.
Priya Goel   +3 more
doaj   +1 more source

A generalization of majorization that characterizes Shannon entropy

open access: yes, 2016
We introduce a binary relation on the finite discrete probability distributions which generalizes notions of majorization that have been studied in quantum information theory.
Mueller, Markus P., Pastena, Michele
core   +1 more source

On Some Properties of Binary Relations [PDF]

open access: yesNagoya Mathematical Journal, 1957
Some important notions in the theory of binary relations such as the relative product of two relations and the converse of a relation are defined in Whitehead and Russell’s “Principia mathematica” ([1]). McKinsey ([2]) and Tarski ([3]) gave their systems of postulates for the calculus of relations.
openaire   +3 more sources

Impact of APOE ε4 Genotype Load on Cognitive Function and Lipid Metabolism in Patients With Cerebral Small Vessel Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Apolipoprotein ε4 (APOE ε4) is a potent genetic risk factor for Alzheimer's disease (AD). However, its role in cerebral small vessel disease (CSVD) remains unclear. Given the clinical and pathological similarities between CSVD and AD, this study aimed to investigate the associations of APOE ε4 gene dosage with cognitive function and
Tingru Jin   +6 more
wiley   +1 more source

Ideals and Filters on Neutrosophic Topologies Generated by Neutrosophic Relations

open access: yesAxioms
Recently, Milles and Hammami presented and studied the concept of a neutrosophic topology generated by a neutrosophic relation. As a continuation in the same direction, this paper studies the concepts of neutrosophic ideals and neutrosophic filters on ...
Ravi P. Agarwal   +4 more
doaj   +1 more source

Relation-based Galois connections: towards the residual of a relation [PDF]

open access: yes, 2017
Inma P. Cabrera, Pablo Cordero, Manuel Ojeda-Aciego, Relation-based Galois connections: towards the residual of a relation, CMMSE 2017: Proceedings of the 17th International Conference on Mathematical Methods in Science and Engineering ( ISBN: 978-84-617-
Cabrera, Inma P.   +2 more
core  

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