Results 41 to 50 of about 265,001 (92)

Unveiling Transitions in Disease States: Study of Depressive and Anxiety Symptom Networks over Time

Depression and Anxiety, Volume 2024, Issue 1, 2024.
Background. Major depressive disorder (MDD) and anxiety disorders (AD) have high degrees of comorbidity and show great overlap in symptoms. The analysis of covarying depressive‐ and anxiety symptoms in longitudinal, sparse data panels has received limited attention.
Minne Van Den Noortgate, Manuel Morrens, Albert M. Van Hemert, Robert A. Schoevers, Brenda W.J.H. Penninx, Erik J. Giltay, Jingyuan Xiong   +6 more
wiley   +1 more source

Extended modules over skew PBW extensions [PDF]

, 2019
En el libro “Serre’s problem on projective modules” [42], Tsit Yuen Lam definió las clases E de anillos extendidos; estas clases de anillos satisfacen la versión extendida del teorema de Quillen-Suslin.
Fajardo Cardenas, William Alfredo
core  

Centralizers in PBW Extensions

, 2020
In this article we give a description for the centralizer of the coefficient ring R in the skew PBW extension. We give an explicit description in the quasi-commutative case and state a necessary condition in the general case.
Tumwesigye, Alex,, Sergei Silvestrov, Silvestrov, Sergei,, Tumwesigye, Alex Behakanira,, Johan Richter, Alex Behakanira Tumwesigye, Richter, Johan,   +6 more
core   +1 more source

TRIANGULAR MATRIX REPRESENTATIONS OF SKEW MONOID RINGS [PDF]

, 2010
Let R be a ring and S a u.p.-monoid. Assume that there is a monoid homomorphism α : S → Aut (R). Suppose that α is weakly　rigid and lR(Ra) is pure as a left ideal of R for every element a ∈ R.
Zhongkui, Liu, Xiaoyan, Yang
core   +1 more source

Conjetura de Jacobson y extensiones PBW torcidas

Revista Integración, 2014
El propósito de este artículo es calcular el radical de Jacobson de las extensiones PBW torcidas sobre dominios. Como consecuencia de este resultado obtenemos una relación directa entre estas extensiones y la conjetura de Jacobson, lo cual nos permite ...
Armando Reyes
doaj  

bases involutivas y SAGBI para extensiones PBW torcidas

, 2023
ilustraciones, diagramasIn this thesis, we study homological properties and SAGBI and Involutive bases of the noncommutative rings known as skew PBW extensions.
Suárez Gómez, Yésica Paola
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Noetherianity of idealizers in skew extensions [PDF]

, 2020
Given a right ideal I in a ring R, the idealizer of I in R is the largest subring of R in which I becomes a two-sided ideal. These rings are of interest since they often give examples of rings with asymmetrical properties, and they may also display ...
Reynolds, Ruth Alice Elizabeth
core   +1 more source

Some remarks about minimal prime ideals of skew Poincaré-Birkhoff-Witt extensions [PDF]

, 2020
In this paper, we characterize the minimal prime ideals of skew PBW extensions over several classes of rings. We unify different results established in the literature for Ore extensions, and extend all of them to a several families of noncommutative ...
Niño, A., Reyes, A.
core   +1 more source

Skew PBW Extensions of Baer, quasi-Baer, p.p. and p.q.-rings

Revista Integración, 2015
El propósito de este artículo es estudiar las extensiones torcidas de Poincaré-Birkhoff-Witt de anillos de Baer, quasi-Baer, p.p. y p.q.-Baer. Utilizando una noción de rigidez, probamos que estas propiedades son estables para esta clase de extensiones.
Armando Reyes
doaj  

Some ring theoretical properties of skew Poincaré-Birkhoff-Witt extensions [PDF]

, 2017
In this paper we investigate a notion of Armendariz ring for skew Poincaré-Birkhoff-Witt extensions. We proceed with the study on the relationship between the ring theoretical properties of being Baer, quasi-Baer, p.p.
Reyes, Armando, Niño, Arturo
core