Results 21 to 30 of about 126 (60)
Strain, Volume 61, Issue 1, February 2025.Abstract Biphasic flow propagating through a granular medium can be established as an unstable infiltration and can be precursors of nonnegligible deformations. Capturing such infiltration through the lens of a high‐resolution camera, full‐field strain maps are determined via digital image correlation (DIC).
Rana Al Nemer +2 more
wiley +1 more source
Existence of a Periodic and Seasonal INAR Process
Journal of Time Series Analysis, Volume 45, Issue 6, Page 980-1005, November 2024.A spectral criterion involving the model parameters is given for the existence and uniqueness of a periodically correlated and seasonal non‐negative integer‐valued autoregressive process. The structure of the mean and covariance functions of the periodically stationary distribution of the model is derived using its implicit state‐space representation ...
Márton Ispány +3 more
wiley +1 more source
Operator space and operator system analogs of Kirchberg's nuclear embedding theorem
, 2015 The Gurarij operator space $\mathbb{NG}$ introduced by Oikhberg is the unique separable $1$-exact operator space that is approximately injective in the category of $1$-exact operator spaces and completely isometric linear maps.
Lupini, Martino
core +1 more source
Model-theoretic aspects of the Gurarij operator system [PDF]
, 2018 We establish some of the basic model theoretic facts about the Gurarij operator system GS recently constructed by the second-named author. In particular, we show: (1) GS is the unique separable 1-exact existentially closed operator system; (2) GS is the ...
Goldbring, Isaac, Lupini, Martino
core +2 more sources
Classification conjectures for Leavitt path algebras
Bulletin of the London Mathematical Society, Volume 56, Issue 10, Page 3011-3060, October 2024.Abstract The theory of Leavitt path algebras is intrinsically related, via graphs, to the theory of symbolic dynamics and C∗$C^*$‐algebras where the major classification programs have been a domain of intense research in the last 50 years. In this article, we gather together current lines of research in the classification of Leavitt path algebras ...
Guillermo Cortiñas, Roozbeh Hazrat
wiley +1 more source
EEG functional connectivity as a Riemannian mediator: An application to malnutrition and cognition
Human Brain Mapping, Volume 45, Issue 7, May 2024.This study introduces a novel mediation analysis approach using EEG cross‐spectra to investigate whether malnourishment affects children's cognitive performance. The results indicate that brain function across delta, theta, alpha, and beta band frequencies mediates the impact of malnourishment on cognitive performance in specific brain regions ...
Carlos Lopez Naranjo +16 more
wiley +1 more source
On the entropy and information of Gaussian mixtures
Mathematika, Volume 70, Issue 2, April 2024.Abstract We establish several convexity properties for the entropy and Fisher information of mixtures of centred Gaussian distributions. Firstly, we prove that if X1,X2$X_1, X_2$ are independent scalar Gaussian mixtures, then the entropy of tX1+1−tX2$\sqrt {t}X_1 + \sqrt {1-t}X_2$ is concave in t∈[0,1]$t \in [0,1]$, thus confirming a conjecture of Ball,
Alexandros Eskenazis, Lampros Gavalakis
wiley +1 more source
, 2015 This work performs a study of the category of complete matrix-normed spaces, called matricial Banach spaces. Many of the usual constructions of Banach spaces extend in a natural way to matricial Banach spaces, including products, direct sums, and ...
Grilliette, Will
core
Little G. T. for lp-lattice summing operators [PDF]
, 2006 2000 Mathematics Subject Classification: 46B28, 47D15.In this paper we introduce and study the lp-lattice summing operators in the category of operator spaces which are the analogous of p-lattice summing operators in the commutative case.
Mezrag, Lahcène
core
Subspace structure of some operator and Banach spaces
, 2010 We construct a family of separable Hilbertian operator spaces, such that the relation of complete isomorphism between the subspaces of each member of this family is complete $\ks$.
Oikhberg, Timur, Rosendal, Christian
core +2 more sources