Results 11 to 20 of about 390,832 (276)

Separating cyclic subgroups in graph products of groups

open access: yesJournal of Algebra, 2019
We prove that the property of being cyclic subgroup separable, that is having all cyclic subgroups closed in the profinite topology, is preserved under forming graph products. Furthermore, we develop the tools to study the analogous question in the pro-
Berlai, Federico, Ferov, Michal
core   +3 more sources

Residually free groups do not admit a uniform polynomial isoperimetric function [PDF]

open access: yes, 2020
We show that there is no uniform polynomial isoperimetric function for finitely presented subgroups of direct products of free groups, by producing a sequence of subgroups $G_r\leq F_2^{(1)} \times \dots \times F_2^{(r)}$ of direct products of 2 ...
Isenrich, Claudio Llosa, Tessera, Romain
core   +4 more sources

Nonsolvable Groups Whose Degrees of All Proper Subgroups Are the Direct Products of at Most Two Prime Numbers

open access: yesJournal of Mathematics, 2022
Huppert and Manz have determined the nonsolvable groups whose character degrees are products of at most two prime numbers. In this paper, we change the condition from “degrees of a group are products of at most two prime divisors” to “degrees of all ...
Shitian Liu, Xingzheng Tang
doaj   +1 more source

G-Groups and Biuniform Abelian Normal Subgroups [PDF]

open access: yesAdvances in Group Theory and Applications, 2016
We prove a weak form of the Krull-Schmidt Theorem concerning the behavior of direct-product decompositions of $G$-groups, biuniform abelian $G$-groups, $G$-semidirect products and the $G$-set $Hom(H,A)$. Here $G$ and $A$ are groups and $H$ is a $G$-group.
María José Arroyo Paniagua   +1 more
doaj   +1 more source

Binary subgroups of direct products

open access: yesL’Enseignement Mathématique, 2023
We explore an elementary construction that produces finitely presented groups with diverse homological finiteness properties – the binary subgroups , B(\Sigma,\mu)<G_1\times\dots\times G_m .
openaire   +3 more sources

Lifting automorphisms of subgroups of direct products of cyclic $p$-groups [PDF]

open access: yesInternational Journal of Group Theory
Let $\Gamma$ be a finite group. A subgroup $H$ of $\Gamma$ is called ``fully liftable" in $\Gamma$ if every automorphism of $H$ is the restriction of an automorphism of $\Gamma$.
Jill Dietz
doaj   +1 more source

Products of Borel subgroups [PDF]

open access: yesProceedings of the American Mathematical Society, 2008
We investigate the Borelness of the product of two Borel subgroups in Polish groups. While the intersection of these two subgroups is Polishable, the Borelness of their product is confirmed. On the other hand, we construct two Δ 3 0 \boldsymbol {\Delta }^{0}_{3} subgroups whose ...
Ding, Longyun, Li, Bingqing
openaire   +1 more source

RP-HPLC-Based Flavonoid Profiling Accompanied with Multivariate Analysis: An Efficient Approach for Quality Assessment of Houttuynia cordata Thunb Leaves and Their Commercial Products

open access: yesMolecules, 2023
Chemical profiling for quality monitoring and evaluation of medicinal plants is gaining attention. This study aims to develop an HPLC method followed by multivariate analysis to obtain HPLC profiles of five specific flavonoids, including rutin (1 ...
Minh Hien Nguyen   +6 more
doaj   +1 more source

Mixture Modeling of Time-to-Event Data in the Proportional Odds Model

open access: yesMathematics, 2022
Subgroup analysis with survival data are most essential for detailed assessment of the risks of medical products in heterogeneous population subgroups. In this paper, we developed a semiparametric mixture modeling strategy in the proportional odds model ...
Xifen Huang   +4 more
doaj   +1 more source

Nutritional diversity of agricultural and agro-industrial by-products for ruminant feeding

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2012
Fifty-seven by-products were collected from regions throughout Brazil. Chemical composition, in vitro neutral detergent fiber digestibility (IVNDFD), and total digestible nutrients (TDN) were determined with the objective of grouping by-products with ...
J.A.G. Azevêdo   +8 more
doaj   +1 more source

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