Results 21 to 30 of about 90,465 (279)

Computing nilpotent quotients in finitely presented Lie rings [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 1997
A nilpotent quotient algorithm for finitely presented Lie rings over Z (and Q) is described. The paper studies the graded and non-graded cases separately.
Csaba Schneider
doaj   +2 more sources

On the structure of Stanley-Reisner rings associated to cyclic polytopes [PDF]

open access: yes, 2011
We study the structure of Stanley-Reisner rings associated to cyclic polytopes, using ideas from unprojection theory. Consider the boundary simplicial complex Delta(d,m) of the d-dimensional cyclic polytope with m vertices.
Boehm, Janko   +1 more
core   +4 more sources

Some interactions between Hopf Galois extensions and noncommutative rings

open access: yesUniversitas Scientiarum, 2022
In this paper, our objects of interest are Hopf Galois extensions (e.g., Hopf algebras, Galois field extensions, strongly graded algebras, crossed products, principal bundles, etc.) and families of noncommutative rings (e.g., skew polynomial rings, PBW ...
Armando Reyes, Fabio Calderón
doaj   +1 more source

Leavitt path algebras: Graded direct-finiteness and graded $\Sigma$-injective simple modules

open access: yes, 2017
In this paper, we give a complete characterization of Leavitt path algebras which are graded $\Sigma $-$V$ rings, that is, rings over which a direct sum of arbitrary copies of any graded simple module is graded injective.
Hazrat, Roozbeh   +2 more
core   +1 more source

On graded WAG2-absorbing submodule

open access: yesМатематичні Студії, 2022
Let $G$ be a group with identity $e$. Let $R$ be a $G$-graded commutative ring and $M$ a graded $R$-module. In this paper, we introduce the concept of graded $WAG2$-absorbing submodule. A number of results concerning of these classes of graded submodules
K. Al-Zoubi, Mariam Al-Azaizeh
doaj   +1 more source

On Quillen's calculation of graded $K$-theory

open access: yes, 2011
We adapt Quillen's calculation of graded K-groups of Z-graded rings with support in N to graded K-theory, allowing gradings in a product Z \times G with G an arbitrary group. This in turn allows us to use inductions and calculate graded K-theory of Z^
C Năstăsescu, H Bass, H Bass
core   +1 more source

F-THRESHOLDS OF GRADED RINGS [PDF]

open access: yesNagoya Mathematical Journal, 2016
The$a$-invariant, the$F$-pure threshold, and the diagonal$F$-threshold are three important invariants of a graded$K$-algebra. Hirose, Watanabe, and Yoshida have conjectured relations among these invariants for strongly$F$-regular rings. In this article, we prove that these relations hold only assuming that the algebra is$F$-pure.
De Stefani A, Nunez-Betancourt L
openaire   +4 more sources

Bimodules in group graded rings

open access: yes, 2017
In this article we introduce the notion of a controlled group graded ring. Let $G$ be a group, with identity element $e$, and let $R=\oplus_{g\in G} R_g$ be a unital $G$-graded ring.
Öinert, Johan
core   +1 more source

Free Vibration Analyses of Stiffened Functionally Graded Graphene-Reinforced Composite Multilayer Cylindrical Panel

open access: yesMathematics, 2023
In this paper, the free vibration response of a stiffened functionally graded graphene nanoplatelet (GPL)-reinforced composite multilayer cylindrical shell panel is studied for the first time.
Yuhua Zhou   +6 more
doaj   +1 more source

Differential Calculus on N-Graded Manifolds

open access: yesJournal of Mathematics, 2017
The differential calculus, including formalism of linear differential operators and the Chevalley–Eilenberg differential calculus, over N-graded commutative rings and on N-graded manifolds is developed.
G. Sardanashvily, W. Wachowski
doaj   +1 more source

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