Results 51 to 60 of about 222,859 (215)

Idempotents in Group Rings [PDF]

open access: yesProceedings of the American Mathematical Society, 1971
In this note we offer an elementary entirely self-contained proof of a theorem of Kaplansky on idempotents in complex group rings.
openaire   +1 more source

Public Key Protocols from Twisted-Skew Group Rings

open access: yesCryptography
This article studies some algebraic structures known as twisted-skew group rings in the context of public key cryptography. We first present some background related to these structures to then specifically introduce particular twisted-skew group rings ...
Javier de la Cruz   +3 more
doaj   +1 more source

A remark on group rings of periodic groups [PDF]

open access: yesInternational Journal of Group Theory, 2016
A positive solution of the problem of the existence of nontrivial pairs of zero-divisors in group rings of free Burnside groups of sufficiently large odd periods $n>10^{10}$ obtained previously by S. V. Ivanov and R. Mikhailov extended to all odd periods
Artur Grigoryan
doaj  

Group rings of graded rings. applications

open access: yesJournal of Pure and Applied Algebra, 1984
A ring R is graded by a group G if \(R=\oplus R(x)\) is a direct sum of the additive subgroups R(x) indexed by the elements \(x\in G\) and if \(R(x)R(y)\subseteq R(xy).\) For example, R could be a group ring S[G] or more generally a crossed product S*G.
openaire   +1 more source

The Line Scan Camera Calibration Based on Space Rings Group

open access: yesIEEE Access, 2018
In addition to the accuracy requirements, the calibration of the line scan camera (LSC) should also have strong operability and portability. This paper presents a low-cost high-reliability LSC calibration method.
Menghui Niu   +4 more
doaj   +1 more source

Units and augmentation powers in integral group rings [PDF]

open access: green, 2020
Sugandha Maheshwary, Inder Bir S. Passi
openalex   +1 more source

Rings all of whose additive group endomorphisms are left multiplications

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1984
Motivated by Cauchy's functional equation f(x+y)=f(x)+f(y), we study in §1 special rings, namely, rings for which every endomorphism f of their additive group is of the form f(x)≡ax. In §2 we generalize to R algebras (R a fixed commutative ring) and give
Michael I. Rosen, Oved shisha
doaj   +1 more source

Group association schemes and Schur rings

open access: yesLe Matematiche, 1992
See directly the article.
Udo Ott
doaj  

Second cohomology of Lie rings and the Schur multiplier [PDF]

open access: yesInternational Journal of Group Theory, 2014
We exhibit an explicit construction for the second cohomology group$H^2(L, A)$ for a Lie ring $L$ and a trivial $L$-module $A$.We show how the elements of $H^2(L, A)$ correspond one-to-one to theequivalence classes of central extensions of $L$ by $A ...
Max Horn, Seiran Zandi
doaj  

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