Results 101 to 110 of about 106,736,613 (296)

An Algebra of Properties of Binary Relations

CoRR, 2021
We consider all 16 unary operations that, given a homogeneous binary relation R, define a new one by a boolean combination of xRy and yRx. Operations can be composed, and connected by pointwise-defined logical junctors. We consider the usual properties of relations, and allow them to be lifted by prepending an operation.
openaire   +3 more sources

White Matter Hyperintensity Burden and Short‐Interval Change Associated With Sleep Apnoea in the UK Biobank

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Purpose White matter hyperintensities (WMH) are a core neuroimaging marker of cerebral small vessel disease (CSVD). Sleep apnoea (SA) is a recognized vascular risk factor, but its associations with regional WMH burden, short‐interval WMH change and cognitive performance in population‐based cohorts remain incompletely defined. We
Peng Cheng, Diego Z. Carvalho, Shahid Karim, Anwar Chahal, Virend K. Somers   +4 more
wiley   +1 more source

A KKM-RESULT AND AN APPLICATION FOR BINARY AND NON-BINARY CHOICE FUNCTIONS [PDF]

By generalizing the classical Knaster-Kuratowski-Mazurkiewicz Theorem, we obtain a result that provides sufficient conditions to ensure the non-emptiness of several kinds of choice functions. This result generalizes well-known results on the existence of
Begoña Subiza
core  

Relational Strict Almost Contractions Employing Test Functions and an Application to Nonlinear Integral Equations

Mathematics
The present study deals with some fixed-point outcomes under a nonlinear formulation of strict almost contractions in a metric space endued with an arbitrary relation. The outcomes established herein enhance and develop various existing outcomes.
Doaa Filali, Faizan Ahmad Khan
doaj   +1 more source

Comprehensive Assessment of Arterial, Tissue, and Venous Collaterals for Evaluating the Infarct Growth Rate: The Multimodal Collateral Score

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Collaterals are crucial factors that influence the infarct growth rate (IGR). We aimed to determine whether a comprehensive multimodal collateral score (MCS), incorporating collateral assessment at the arterial, tissue, and venous levels, is associated with functional independence and provides incremental prognostic value over ...
Giorgio Busto, Umberto Pensato, Ilaria Casetta, Giorgio U. Marcello, Angelo Barra, Anna Poggesi, Edoardo Carlesi, Sara Mancini, Andrea Ginestroni, Vittorio Miele, Alessandro Padovani, Andrea Morotti, Enrico Fainardi   +12 more
wiley   +1 more source

New spectroscopic binary companions of giant stars and updated metallicity distribution for binary systems [PDF]

, 2016
We report the discovery of 24 spectroscopic binary companions to giant stars. We fully constrain the orbital solution for 6 of these systems. We cannot unambiguously derive the orbital elements for the remaining stars because the phase coverage is ...
Vanzi, L., Wittenmyer, R., Drass, H, L. Vanzi, Jenkins, J., Wittenmyer, R. A., Bluhm, P., Rojo, P, Bluhm, P, Voss, J., Vuckovic, M, Wittenmyer, RA, Soto, M., Vuckovic, M., H. Drass, Vanzi, Leonardo, Jenkins, James Stewart, Jones, M. I., C. H. F. Melo, Rojo, P., Olivares, F., Drass, H., Jones, MI, P. Rojo, Soto, M. G, Melo, CHF, R. A. Wittenmyer, F. Olivares, M. Vučković, Mennickent, R. E., Jenkins, J. S., Jones Fernández, Matías Ignacio, Melo, C. H. F., Vanzi, L, Soto, M. G., Olivares, F, M. G. Soto, J. Vos, P. Bluhm, Drass, Holger, J. S. Jenkins, R. E. Mennickent, Mennickent, RE, Melo, C., Jenkins, JS, Mennickent, R., Voss, J, Vos, J., M. I. Jones, Soto, MG   +49 more
core   +1 more source

Normal forms for binary relations

Theoretical Computer Science, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Daniel J. Dougherty, Claudio Gutierrez 0001   +1 more
openaire   +1 more source

Spatial and Volumetric Characteristics of Glioblastoma: Associations With Clinical Presentation and Survival

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective We aim to comprehensively analyze how regional tumor and edema characteristics are associated with clinical presentations and survival outcomes in a large cohort of glioblastoma patients. Methods Patients with IDH‐wildtype glioblastoma who received brain MRI from 2010 to 2023 were included.
Daniel J. Zhou, Marc Jaskir, Julian Gal, Yombe Fonkeu, Christos Davatzikos, MacLean P. Nasrallah, Jose Garcia, Rubo Xing, Stephen J. Bagley, Arati Desai, Richard E. Phillips, Steven Tobochnik, Colin A. Ellis, James J. Gugger, Nishant Sinha, Joel M. Stein, Kathryn A. Davis   +16 more
wiley   +1 more source

Testing predictive performance of binary choice models [PDF]

Binary choice models occur frequently in economic modeling. A measure of the predictive performance of binary choice models that is often reported is the hit rate of a model.
Melenberg, B., Donkers, A.C.D.
core  

Hyperstructures associated with binary relations

Computers & Mathematics with Applications, 2006
Given a binary relation \(R\) on a non-empty set \(H\), a hyperoperation \(\odot_R\) is defined on \(H \times H\) by \(x \odot_R y = \{z \in H \mid xRz, zRy\}\). \((H,\odot_R) \) is a hypergroupoid \(\Leftrightarrow R \circ R = H \times H\) [\textit{P. Corsini}, ``Binary relations and hypergroupoids'', Ital. J. Pure Appl. Math.
Spartalis Spartalis, C. Mamaloukas
openaire   +1 more source