Results 81 to 90 of about 3,162,927 (375)

The Picard group of algebras over an algebraically nonclosed field

open access: yesJournal of Pure and Applied Algebra, 2011
AbstractLet k be a field that is not algebraically closed, and let A be a k-algebra, whose each maximal ideal has residue field k. We prove that each element of the Picard group of A is of finite order and give an optimal upper bound for its order.
Wojciech Kucharz, Kamil Rusek
openaire   +2 more sources

ASSOCIATIVE NIL-ALGEBRAS OVER FINITE FIELDS [PDF]

open access: yesInternational Journal of Algebra and Computation, 2013
We study the nilpotency degree of a relatively free finitely generated associative algebra with the identity xn = 0 over a finite field đ”œ with q elements. In the case of q ≄ n the nilpotency degree is proven to be the same as in the case of an infinite field of the same characteristic.
Artem Lopatin, Ivan P. Shestakov
openaire   +3 more sources

Advancement in Colloidal Metasurfaces: Approaches for Scalable Photonic Devices

open access: yesAdvanced Materials Interfaces, EarlyView.
This perspective explores colloidal metasurfaces composed of plasmonic and emitting nanoparticles assembled by laser interference lithography and template‐assisted self‐assembly methods. Precise design strategies achieve directional emission, low‐threshold lasing, and tunable photonic bandgaps.
Sezer Seçkin   +2 more
wiley   +1 more source

Dopant‐free passivating contacts for crystalline silicon solar cells: Progress and prospects

open access: yesEcoMat, Volume 5, Issue 2, February 2023., 2023
This article provides an overview of the mechanism and materials of dopant‐free passivating contacts for crystalline silicon solar cells, and focuses on the recent advances in contact configuration and interface engineering for efficiency and stability enhancement.
Yanhao Wang   +5 more
wiley   +1 more source

Structure Theorems for Basic Algebras [PDF]

open access: yes, 2011
A basic finite dimensional algebra over an algebraically closed field $k$ is isomorphic to a quotient of a tensor algebra by an admissible ideal. The category of left modules over the algebra is isomorphic to the category of representations of a finite ...
Berg, Carl Fredrik
core  

Comma vertex and string field algebra [PDF]

open access: yes, 2001
We study the matter part of the algebra of open string fields using the 3-string vertex over the sliver state, which we call ``comma vertex''. By generalizing this comma vertex to the N-string overlap, we obtain a closed form of the Neumann coefficients ...
K. Furuuchi, Kazumi Okuyama
semanticscholar   +1 more source

Enhancing the Efficiency of Polariton OLEDs in and Beyond the Single‐Excitation Subspace

open access: yesAdvanced Optical Materials, EarlyView.
Organic light‐emitting diodes (OLEDs) are transforming lighting with eco‐friendly manufacturing and flexible applications. However, since 75 % of excited states (triplets) are non‐emissive, recent research has focused on triplet harvesting. This work proposes a predictive polariton‐based model, exploring conditions for OLED enhancement and showing that
Olli Siltanen   +3 more
wiley   +1 more source

Rings with involution whose symmetric elements are central

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1980
In a ring R with involution whose symmetric elements S are central, the skew-symmetric elements K form a Lie algebra over the commutative ring S. The classification of such rings which are 2-torsion free is equivalent to the classification of Lie ...
Taw Pin Lim
doaj   +1 more source

Description of the automorphism groups of some Leibniz algebras

open access: yesResearches in Mathematics, 2023
Let $L$ be an algebra over a field $F$ with the binary operations $+$ and $[,]$. Then $L$ is called a left Leibniz algebra if it satisfies the left Leibniz identity: $[[a,b],c]=[a,[b,c]]-[b,[a,c]]$ for all elements $a,b,c\in L$.
L.A. Kurdachenko, O.O. Pypka, M.M. Semko
doaj   +1 more source

Free Malcev algebra of rank three

open access: yes, 2016
We find a basis of the free Malcev algebra on three free generators over a field of characteristic zero. The specialty and semiprimity of this algebra are proved.
Alexandr I. Kornev   +11 more
core   +1 more source

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