Results 21 to 30 of about 557,164 (317)

Unification Theories: Rings, Boolean Algebras and Yang–Baxter Systems

open access: yesAxioms, 2023
This paper continues a series of papers on unification constructions. After a short discussion on the Euler’s relation, we introduce a matrix version of the Euler’s relation, E I π+U=O.
Florin F. Nichita
doaj   +1 more source

Weakly quadratent rings

open access: yesJournal of Taibah University for Science, 2019
We completely characterize up to an isomorphism those rings whose elements satisfy the equations $ x^4=x $ or $ x^4=-x $ . Specifically, it is proved that a ring is weakly quadratent if, and only if, it is isomorphic to either K, $ \mathbb {Z}_3 ...
Peter V. Danchev
doaj   +1 more source

Technical elements on the rings in men’s artistic gymnastics—a systematic review [PDF]

open access: yesJournal of Men's Health, 2023
Although rings can move freely in all possible directions, by which they differ from all other apparatuses, physical performance at highest level is essetial in men’s artistic gymnastics to fulfill the exercise’s technical requirements in the interest
Dušan Đorđević   +10 more
doaj   +1 more source

Medieval jewelry at the “Palace Center – East” site in Pliska

open access: yesПриноси към българската археология, 2021
This paper presents jewelry falling into two categories, divided by their material composition – a group of metal items, and a group made from glass. They were found during archaeological excavations of the “Palace Center – East” site in Pliska.
Valeri Grigorov
doaj   +3 more sources

Universal Enveloping Commutative Rota–Baxter Algebras of Pre- and Post-Commutative Algebras

open access: yesAxioms, 2017
Universal enveloping commutative Rota–Baxter algebras of pre- and post-commutative algebras are constructed. The pair of varieties (RBλCom, postCom) is proved to be a Poincaré–Birkhoff–Witt-pair (PBW)-pair and the pair (RBCom, preCom) is proven not to be.
Vsevolod Gubarev
doaj   +1 more source

Bounds for Coding Theory over Rings

open access: yesEntropy, 2022
Coding theory where the alphabet is identified with the elements of a ring or a module has become an important research topic over the last 30 years. It has been well established that, with the generalization of the algebraic structure to rings, there is
Niklas Gassner   +3 more
doaj   +1 more source

Rings of rings: calixpyrrole cyclotrimers

open access: yesArkivoc, 2021
Los calixpirroles son una clase de heteromacrociclos que han sido un tema de considerable interés en las últimas dos décadas debido a su rica química huésped-huésped como receptores de aniones. Se han informado varias estructuras que comprenden más de una unidad de calixpirrol como receptores multitópicos y multivalentes.
Rakia Saidi   +4 more
openaire   +2 more sources

Piranti Lunak Pengujian Struktur Matematika Grup, Ring, Field Berbasis Osp (Open Source Program)

open access: yesComTech, 2014
This design of a computer software is a development and continuation of the software made on the previous research (2009/2010). However, this further research developed and expanded the scopes of testing more on the Siclic Group, Isomorphism Group, Semi
Ngarap Im Manik, Don Tasman
doaj   +1 more source

SMARANDACHE NON-ASSOCIATIVE RINGS [PDF]

open access: yes, 2002
An associative ring is just realized or built using reals or complex; finite or infinite by defining two binary operations on it. But on the contrary when we want to define or study or even introduce a non-associative ring we need two separate algebraic ...
Vasantha, Kandasamy
core   +1 more source

A case of penile strangulation after placement of metallic rings

open access: yesUrology Annals, 2018
Penile strangulation following placement of metallic rings is a rare clinical entity that needs urgent attention to avoid potentially severe clinical consequences.
Iraklis C Mitsogiannis   +3 more
doaj   +1 more source

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