Results 21 to 30 of about 285,691 (303)

Association between Inhaled Corticosteroid Use and SARS-CoV-2 Infection: A Nationwide Population-Based Study in South Korea [PDF]

open access: yesTuberculosis and Respiratory Diseases, 2022
Background Although it is known that inhaled corticosteroid (ICS) use may increase the risk of respiratory infection, its influence on the risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection remains unknown.
Sang Chul Lee   +4 more
doaj   +1 more source

A Survey of Total Positivity [PDF]

open access: yesMilan Journal of Mathematics, 2008
8 ...
openaire   +3 more sources

Total positivity, spherical series, and hypergeometric functions of matrix argument [PDF]

open access: yes, 1989
Given a totally positive function K of two real variables, is there a method for establishing the total positivity of K in an “obvious” fashion? In the case in which K(x, y) = f(xy), where f is real-analytic in a neighborhood of zero, we obtain integral ...
Gross, Kenneth I, Richards, Donald St.P
core   +1 more source

The Cambanis family of bivariate distributions: Properties and applications

open access: yesStatistica, 2016
The Cambanis family of bivariate distributions was introduced as a generalization of the Farlie-Gumbel-Morgenstern system. The present work is an attempt to investigate the distributional characteristics and applications of the family.
N. Unnikrishnan Nair   +2 more
doaj   +1 more source

Exploring the total positivity of yields correlations [PDF]

open access: yes, 2016
We test the plausibility of the total positivity assumption of interest rates changes recently introduced in order to justify the presence of shift, slope and curvature for yield curves. To this aim, we introduce and discuss a test of total positivity of
GOIA, Aldo, SALINELLI, Ernesto
core   +1 more source

Large N analytical functional bootstrap. Part I. 1D CFTs and total positivity

open access: yesJournal of High Energy Physics, 2023
We initiate the analytical functional bootstrap study of conformal field theories with large N limits. In this first paper we particularly focus on the 1D O(N) vector bootstrap.
Zhijin Li
doaj   +1 more source

Weak Dependence Notions and Their Mutual Relationships

open access: yesMathematics, 2020
New weak notions of positive dependence between the components X and Y of a random pair (X,Y) have been considered in recent papers that deal with the effects of dependence on conditional residual lifetimes and conditional inactivity times.
Jorge Navarro   +2 more
doaj   +1 more source

Total positivity of Hadamard products [PDF]

open access: yes, 1992
The Hadamard product of two totally positive Toeplitz matrices M and N need not be totally positive. When only finitely many diagonals of M and of N are non-zero, preservation of total positivity by Hadamard product is essentially a theorem of Maló. Here
Wagner, David G, David G Wagner
core   +1 more source

THE TOTAL DISTANCE FOR TOTALLY POSITIVE ALGEBRAIC INTEGERS [PDF]

open access: yesBulletin of the Australian Mathematical Society, 2014
AbstractLet $\def \xmlpi #1{}\def \mathsfbi #1{\boldsymbol {\mathsf {#1}}}\let \le =\leqslant \let \leq =\leqslant \let \ge =\geqslant \let \geq =\geqslant \def \Pr {\mathit {Pr}}\def \Fr {\mathit {Fr}}\def \Rey {\mathit {Re}}P(x)$ be a polynomial of degree $d$ with zeros $\alpha _1, \ldots, \alpha _d$.
openaire   +1 more source

Q-system Cluster Algebras, Paths and Total Positivity

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2010
In the first part of this paper, we provide a concise review of our method of solution of the A_r Q-systems in terms of the partition function of paths on a weighted graph. In the second part, we show that it is possible to modify the graphs and transfer
Philippe Di Francesco, Rinat Kedem
doaj   +1 more source

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