Results 21 to 30 of about 665,695 (311)

Torsion-free crystallographic groups with indecomposable holonomy group II. [PDF]

open access: yes, 2004
Let K be a principal ideal domain, G a finite group, and M a KG-module which is a free K-module of finite rank on which G acts faithfully. A generalized crystallographic group is a non-split extension C of M by G such that conjugation in C induces the G ...
Bódi, Viktor   +3 more
core   +1 more source

On the ring of quotients of a group ring [PDF]

open access: yesProceedings of the American Mathematical Society, 1972
In this paper the following extension of a result of Martha Smith is proved. Theorem. Let K [ G ]
openaire   +2 more sources

SMARANDACHE PSEUDO- IDEALS [PDF]

open access: yes, 2008
In this paper we study the Smarandache pseudo-ideals of a Smarandache ring. We prove every ideal is a Smarandache pseudo-ideal in a Smarandache ring but every Smarandache pseudo-ideal in general is not an ideal. Further we show that every polynomial ring
Vasantha Kandasamy, W. B.
core   +1 more source

Pain Detection in Biophysiological Signals: Knowledge Transfer from Short-Term to Long-Term Stimuli Based on Distance-Specific Segment Selection

open access: yesComputers, 2023
In this study, we analyze a signal segmentation-specific pain duration transfer task by applying knowledge transfer from short-term (phasic) pain stimuli to long-term (tonic) pain stimuli.
Tobias Benjamin Ricken   +3 more
doaj   +1 more source

On one class of modules over group rings with finiteness restrictions [PDF]

open access: yesInternational Journal of Group Theory, 2014
The author studies the $bf R$$G$-module $A$ such that $bf R$ is an associative ring, a group $G$ has infinite section $p$-rank (or infinite 0-rank), $C_{G}(A)=1$, and for every proper subgroup $H$ of infinite section $p$-rank (or infinite 0-rank ...
Olga Dashkova
doaj  

Representations of group rings and groups [PDF]

open access: yesInternational Journal of Group Theory, 2018
An isomorphism between the group ring of a finite group and a ring of certain block diagonal matrices is established. It is shown that for any group ring matrix $A$ of $mathbb{C} G$ there exists a matrix $U$ (independent of $A$) such that $U^{-1}AU= diag(
Ted Hurley
doaj   +1 more source

Study on Deformation Characteristics of Low-Highway Subgrade under Traffic Load

open access: yesApplied Sciences, 2022
Highway subgrade bears millions of traffic loads over the years, and its strength, stiffness, and long-term stability gradually decline. In this paper, dynamic triaxial tests were carried out to study the time evolution and spatial distribution of strain
Hui Qi   +6 more
doaj   +1 more source

Selective Enyne Ring-Closing Metathesis with Main Group Metal Catalysts

open access: yes, 2022
Ring-closing metathesis (RCM) represents an ideal and atom-economical way to construct cyclic compounds. The precedented reaction systems for endo-selective enyne RCM mainly rely on precious transition metal carbene complexes or activated substrates ...
Zhi-Xiang, Yu   +3 more
core   +1 more source

Linear groups and group rings

open access: yesJournal of Algebra, 2006
The authors' prime objective is to prove that the integral group ring \(\mathbb{Z} G\) of the non-Abelian finite group \(G\) of order prime to 6 contains two Bass cyclic units that generate a non-Abelian free group. A Bass cyclic unit of \(\mathbb{Z} G\) is an element of the form \[ (1+x+\cdots+x^{k-1})^m+d^{-1}(1-k^m)(1+x+\cdots+x^{d-1}), \] where \(x\
Gonçalves, J. Z., Passman, D. S.
openaire   +2 more sources

A Characterization of Commutative Group Rings Whose Units Are Feckly Trivial

open access: yesMathematics
Characterizing specific types of units in group rings in terms of the Jacobson radical constitutes a frequently investigated problem in the theory of group rings.
Ömer Küsmüş
doaj   +1 more source

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