Results 1 to 10 of about 2,160,854 (336)

On regular group rings [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1957
Let G be a multiplicative group, K a commutative ring with unit, and K(G) the group ring of G with respect to K. We say that K(G) is regular if given an x in K(G), there is a y in K(G) such that xyx = x. Using a homological characterization of regular rings which was found independently by M.
Maurice Auslander
openalex   +3 more sources

NeutroAlgebra of Idempotents in Group Rings [PDF]

open access: yesNeutrosophic Sets and Systems, 2022
In this paper, the authors study the new concept of NeutroAlgebra of idempotents in group rings. It is assumed that RG is the group ring of a group G over the ring R. R should be a commutative ring with unit 1.
Vasantha Kandasamy   +1 more
doaj   +1 more source

Some results on gorenstein flat (gorenstein cotorsion) dimensions of modules over group rings [PDF]

open access: yesریاضی و جامعه, 2022
Let $R$ be a commutative ring, Γ be a group, and Γ′ be a subgroup of finite index. In this paper, we study the class of Gorenstein flat (resp. Gorenstein cotorsion) modules over the group ring RΓ.
Ali Hajizamani
doaj   +1 more source

Securing an Authenticated Privacy Preserving Protocol in a Group Signature Scheme Based on a Group Ring

open access: yesMathematics, 2023
Group signatures are a leading competing signature technique with a substantial amount of research. With group settings, group signatures provide user anonymity. Any group member with access to the group can generate a signature while remaining anonymous.
Nur Afiqah Suzelan Amir   +2 more
doaj   +1 more source

SIMULATION OF CLOSE-RANGE PHOTOGRAMMETRIC SYSTEMS FOR INDUSTRIAL SURFACE INSPECTION [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Close-range photogrammetric measurement systems are increasingly used for high-precision surface inspection of car body parts. These measurement systems are based on an active light source, the projector, and one or more cameras.
T. Becker, M. Özkul, U. Stilla
doaj   +1 more source

Primitive group rings [PDF]

open access: yesProceedings of the American Mathematical Society, 1972
Two theorems showing the existence of primitive group rings are proved. THEOREM 1. Let G be a countable locally finite group and F a field of characteristic 0, or characteristic p if G has no elements of' order p. Then the group ring F[G] is primitive if and only if G has no finite normal subgroups. THEOREM 2. Let G be any grolp, and F afield.
Formanek, Edward, Snider, Robert L.
openaire   +2 more sources

Comprehensive Analysis of a Symbiotic Candidate V503 Her

open access: yesThe Astronomical Journal, 2023
V503 Her was previously proposed as an eclipsing symbiotic candidate based on photometric behavior and spectroscopic appearance indicating the composite optical spectrum.
Jaroslav Merc   +12 more
doaj   +1 more source

Public Key Protocols over Skew Dihedral Group Rings

open access: yesMathematics, 2022
This paper introduces skew dihedral group rings and their applications for public-key cryptography. We present a specific skew group ring that is the underlying algebraic platform for our cryptographic constructions.
Javier de la Cruz   +2 more
doaj   +1 more source

Stiffness Determination of Backfill-Rock Interface to Numerically Investigate Backfill Stress Distributions in Mine Stopes

open access: yesAdvances in Civil Engineering, 2021
Numerical modeling is an effective and efficient method to investigate the stress distributions of backfill in stopes, which should be well understood in underground mining. Interface elements between backfill and rock in simulated stopes had been proved
Guangsheng Liu, Xiaocong Yang, Lijie Guo
doaj   +1 more source

On Idempotent Units in Commutative Group Rings

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2020
Special elements as units, which are defined utilizing idempotent elements, have a very crucial place in a commutative group ring. As a remark, we note that an element is said to be idempotent if r^2=r in a ring. For a group ring RG, idempotent units are
Ömer Küsmüş
doaj   +1 more source

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