Results 21 to 30 of about 6,919,485 (295)

Total positivity order and the normal distribution [PDF]

open access: yes, 2006
International audienceUnlike the usual stochastic order, total positivity order is closed under conditioning. Here we provide a general formulation of the preservation properties of the order under conditioning; we study certain properties of the order ...
Marco Scarsini   +3 more
core   +2 more sources

Against Performative Positivity

open access: yes, 2021
I am considered a pessimist—the ‘Daria’ of design—whose standards are too high and too critical. Designers, I would argue, are afraid to embrace dissent because it disrupts the positivity bubble.
Abdulla, Danah
core   +5 more sources

Totally positive matrices and totally positive hypergraphs

open access: yesLinear Algebra and its Applications, 2001
This paper characterizes (0,1)-matrices which are totally positive, that is, all their minors are totally positive. First the case of \(1\times 1\) and \(2\times 2\) minors is characterized in terms of interval hypergraphs and then the general case is characterized in terms of a chain of cliques \(C_i\), \(C_i\cap C_j = \emptyset \Leftrightarrow |i-j ...
Kubicki, Grzegorz   +2 more
openaire   +2 more sources

On stochastic orders and total positivity

open access: yesESAIM: Probability and Statistics, 2023
The usual stochastic order and the likelihood ratio order between probability distributions on the real line are reviewed in full generality. In addition, for the distribution of a random pair (X, Y), it is shown that the conditional distributions of Y, given X = x, are increasing in x with respect to the likelihood ratio order if and only if the joint
Lutz Dümbgen, Alexandre Mösching
openaire   +3 more sources

Positivity of Continuous-Time Descriptor Systems With Time Delays [PDF]

open access: yes, 2014
This technical note is concerned with positivity characteristic of continuous-time descriptor systems with time delays. First, a set of necessary and sufficient conditions is presented to check the property.
Yan, Xinggang   +3 more
core   +1 more source

A Survey of Total Positivity [PDF]

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

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

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, 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

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