Results 41 to 50 of about 1,200,355 (273)

On the Free Energy of Noncommutative Quantum Electrodynamics at High Temperature [PDF]

open access: yes, 2006
We compute higher order contributions to the free energy of noncommutative quantum electrodynamics at a nonzero temperature $T$. Our calculation includes up to three-loop contributions (fourth order in the coupling constant $e$).
Affleck   +26 more
core   +2 more sources

Some Developments in the Field of Homological Algebra by Defining New Class of Modules over Nonassociative Rings

open access: yesJournal of Mathematics, 2022
The LA-module is a nonassociative structure that extends modules over a nonassociative ring known as left almost rings (LA-rings). Because of peculiar characteristics of LA-ring and its inception into noncommutative and nonassociative theory, drew the ...
Asima Razzaque, Inayatur Rehman
doaj   +1 more source

Sheaves that fail to represent matrix rings [PDF]

open access: yes, 2014
There are two fundamental obstructions to representing noncommutative rings via sheaves. First, there is no subcanonical coverage on the opposite of the category of rings that includes all covering families in the big Zariski site.
Reyes, Manuel L.
core   +1 more source

Some special types of determinants in graded skew P BW extensions.

open access: yesRevista Integración, 2021
In this paper, we prove that the Nakayama automorphism of a graded skew PBW extension over a finitely presented Koszul Auslanderregular algebra has trivial homological determinant.
Héctor Suárez   +2 more
doaj  

Noncommutative curves and noncommutative surfaces

open access: yes, 2000
In this survey article we describe some geometric results in the theory of noncommutative rings and, more generally, in the theory of abelian categories.
Bergh, M. Van den, Stafford, J. T.
core   +3 more sources

The Quasi-self-dual, Right LCD and ACD codes over a noncommutative non-unital ring

open access: yesJournal of Algebra Combinatorics Discrete Structures and Applications
This paper presents the study of QSD (quasi-self-dual), right-LCD (linear complementary dual), and ACD (additive complementary dual) codes over a noncommutative local ring $R= \langle a,b ~|~ 3a =3b=0,~ a^2=a,~ b^2=b,~ ab=b,~ ba=a \rangle$ of order $9 ...
Anup Kushwaha, S. Yadav, Om Prakash
semanticscholar   +1 more source

Mass Formula for Self-Orthogonal and Self-Dual Codes over Non-Unital Rings of Order Four

open access: yesMathematics, 2023
We study the structure of self-orthogonal and self-dual codes over two non-unital rings of order four, namely, the commutative ring I=a,b|2a=2b=0,a2=b,ab=0 and the noncommutative ring E=a,b|2a=2b=0,a2=a,b2=b,ab=a,ba=b.
Adel Alahmadi   +4 more
doaj   +1 more source

Criteria for \sigma-ampleness

open access: yes, 2000
In the noncommutative geometry of Artin, Van den Bergh, and others, the twisted homogeneous coordinate ring is one of the basic constructions. Such a ring is defined by a $\sigma$-ample divisor, where $\sigma$ is an automorphism of a projective scheme X.
Keeler, Dennis S.
core   +1 more source

A note on a pair of derivations of semiprime rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We study certain properties of derivations on semiprime rings. The main purpose is to prove the following result: let R be a semiprime ring with center Z(R), and let f, g be derivations of R such that f(x)x+xg(x)∈Z(R) for all x∈R, then f and g are ...
Muhammad Anwar Chaudhry, A. B. Thaheem
doaj   +1 more source

Adelic analysis and functional analysis on the finite Adele ring [PDF]

open access: yesOpuscula Mathematica, 2018
In this paper, we study operator theory on the \(*\)-algebra \(\mathcal{M}_{\mathcal{P}}\), consisting of all measurable functions on the finite Adele ring \(A_{\mathbb{Q}}\), in extended free-probabilistic sense. Even though our \(*\)-algebra \(\mathcal{
Ilwoo Cho
doaj   +1 more source

Home - About - Disclaimer - Privacy