Results 91 to 100 of about 1,563,307 (153)

On the unit groups of partial Burnside rings [PDF]

open access: yesarXiv, 2018
We describe the generalized Matsuda's theorem, and some results of a Burnside ring extend a partial Burnside ring. In particular, we give isomorphism between partial Burnside rings of different groups. Moreover, we consider the relationship between image of Frobenius-Wielandt homomorphism, a partial Burnside ring, and structure of a group.
arxiv  

Exploring the Polymorphism of Drostanolone Propionate

open access: yesMolecules, 2020
2α-Methyl-4,5α-dihydrotestosterone 17β-propionate, known as drostanolone propionate or masteron, is a synthetic anabolic-androgenic steroid derived from dihydrotestosterone.
Gheorghe Borodi   +2 more
doaj   +1 more source

Crystal structure, Hirshfeld surface analysis and DFT studies of 4-methyl-2-({[4-(trifluoromethyl)phenyl]imino}methyl)phenol

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2020
The title compound, C15H12F3NO, crystallizes with one molecule in the asymmetric unit. The configuration of the C=N bond is E and there is an intramolecular O—H...N hydrogen bond present, forming an S(6) ring motif.
Md. Serajul Haque Faizi   +6 more
doaj   +1 more source

Convolutional codes from units in matrix and group rings [PDF]

open access: yesarXiv, 2007
A general method for constructing convolutional codes from units in Laurent series over matrix rings is presented. Using group ring as matrix rings, this forms a basis for in-depth exploration of convolutional codes from group ring encoding, wherein the ring in the group ring is itself a group ring.
arxiv  

Hochschild cohomology for functors on linear symmetric monoidal categories

open access: yes, 2023
Let $R$ be a commutative ring with unit. We develop a Hochschild cohomology theory in the category $\mathcal{F}$ of linear functors defined from an essentially small symmetric monoidal category enriched in $R$-Mod, to $R$-Mod.
Romero, Nadia
core  

On absolutely invertibles

open access: yesElectronic Research Archive
In this manuscript, the notion of absolutely invertible was extended consistently from semi-normed rings to the class of general topological rings. Then, the closure of the absolutely invertibles multiplied by a certain element was proved to be contained
Francisco Javier García-Pacheco   +2 more
doaj   +1 more source

RESEARCH ON EMBEDDED SMART BEARING STRUCTURE ANALYSIS AND VIBRATION MONITORING SYSTEM DESIGN (MT)

open access: yesJixie qiangdu, 2022
Embedded smart bearing is a kind of structural unit with the characteristics of self sensing, self diagnosis, self-adaptive and self-regulation, which is one of the development directions of high-end bearing at home and abroad.
ZHANG WenYuan   +3 more
doaj  

Applications of Descriptive Set Theory to Complex Analysis

open access: yes, 2021
Descriptive set theory can be used to prove new results in classical complex analysis. Let $\mathcal{A}(\Omega)$ be the set of complex analytic functions on an open subset $\Omega \subseteq \mathbb{C}$ endowed with the usual topology of uniform ...
Caruvana, Christopher   +1 more
core  

Crystal structure of a new monoclinic polymorph of N-(4-methylphenyl)-3-nitropyridin-2-amine

open access: yesActa Crystallographica Section E, 2014
The title compound, C12H11N3O2, is a second monoclinic polymorph (P21, with Z′ = 4) of the previously reported monoclinic (P21/c, with Z′ = 2) form [Akhmad Aznan et al. (2010). Acta Cryst. E66, o2400].
Aina Mardia Akhmad Aznan   +3 more
doaj   +1 more source

Partial normalizations of coxeter arrangements and discriminants [PDF]

open access: yes, 2012
We study natural partial normalization spaces of Coxeter arrangements and discriminants and relate their geometry to representation theory. The underlying ring structures arise from Dubrovin’s Frobenius manifold structure which is lifted (without unit ...
D. Mond, J.M. Granger, M. Schulze
core   +1 more source

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