Results 21 to 30 of about 17,401,899 (301)

A classification of hull operators in archimedean lattice-ordered groups with unit [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2020
The category, or class of algebras, in the title is denoted by $\bf W$. A hull operator (ho) in $\bf W$ is a reflection in the category consisting of $\bf W$ objects with only essential embeddings as morphisms.
Ricardo E. Carrera, Anthony W. Hager
doaj   +1 more source

Presentations for Quaternionic S-Unit Groups [PDF]

open access: yesExperimental Mathematics, 2014
We give an algorithm for presenting S-unit groups of an order in a definite rational quaternion algebra B such that for every p ∈ S at which B splits, the localization of at p is maximal, and all left ideals of of norm p are principal. We then apply this
T. Chinburg   +7 more
semanticscholar   +1 more source

Simultaneous allergic traits in dogs and their owners are associated with living environment, lifestyle and microbial exposures

open access: yesScientific Reports, 2020
Both humans and pet dogs are more prone to develop allergies in urban than in rural environments, which has been associated with the differing microbial exposures between areas.
Jenni Lehtimäki   +5 more
doaj   +1 more source

Memory SARS-CoV-2 T-cell response in convalescent COVID-19 patients with undetectable specific IgG antibodies: a comparative study

open access: yesFrontiers in Immunology, 2023
BackgroundDuring the COVID-19 pandemic, a variable percentage of patients with SARS-CoV-2 infection failed to elicit humoral response. This study investigates whether patients with undetectable SARS-CoV-2 IgG are able to generate SARS-CoV-2 memory T ...
Raquel Fernández-Moreno   +17 more
doaj   +1 more source

Unit groups of integral group rings [PDF]

open access: yesProceedings of the American Mathematical Society, 1994
Let U ( Z G ) U(\mathbb {Z}G) be the unit group of the integral group ring Z G \mathbb {Z}G . A group G G satisfies ( ∗ ) ({\ast }) if either the set
openaire   +2 more sources

On sets with unit Hausdorff density in homogeneous groups

open access: yesForum of Mathematics, Sigma, 2023
It is a longstanding conjecture that given a subset E of a metric space, if E has unit $\mathscr {H}^{\alpha }\llcorner E$ -density almost everywhere, then E is an $\alpha $ -rectifiable set. We prove this conjecture under the assumption that
Antoine Julia, Andrea Merlo
doaj   +1 more source

On unit group of finite semisimple group algebras of non-metabelian groups up to order 72 [PDF]

open access: yesMathematica Bohemica, 2021
We characterize the unit group of semisimple group algebras $\mathbb{F}_qG$ of some non-metabelian groups, where $F_q$ is a field with $q=p^k$ elements for $p$ prime and a positive integer $k$.
Gaurav Mittal, Rajendra Kumar Sharma
doaj   +1 more source

Unit Groups of group algebras of certain quasidihedral group

open access: yesSurveys in Mathematics and its Applications, 2020
Let $F_{q}$ be any finite field of characteristic $p>0$ having $q = p^{n}$ elements. In this paper, we have obtained the complete structure of unit groups of group algebras $F_{q}[QD_{2^k}]$, for $k = 4$ and $5$, for any prime $p>0$, where $QD_{2^k}$ is quasidihedral group of order $2^k$
Suchi Bhatt, Harish Chandra
openaire   +4 more sources

Free Unit Groups in Group Algebras

open access: yesJournal of Algebra, 2001
Let \(K\) be a field and \(G\) be a finite group, which satisfies one of the following conditions: (i) \(K\) is of characteristic \(0\) and \(G\) is nonabelian; (ii) \(K\) is of characteristic \(p\) and for the largest normal \(p\)-subgroup \(P\) of \(G\) the factor-group \(G/P\) is nonabelian.
Gonçalves, J.Z, Passman, D.S
openaire   +1 more source

Which alternating and symmetric groups are unit groups [PDF]

open access: yes, 2013
We prove there is no ring with unit group isomorphic to S_n for n \geq 5 and that there is no ring with unit group isomorphic to A_n for n \geq 5, n \neq 8.
Christopher Davis, Tommy Occhipinti
semanticscholar   +1 more source

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