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Let A be a finitely generated associative algebra over an algebraically closed field. We characterize the finite dimensional modules over A whose orbit closures are regular varieties.

Algebraic Geometry · Mathematics 2007-05-23 Nguyen Quang Loc , Grzegorz Zwara

This paper is devoted to the complete algebraic classification of complex $5$-dimensional nilpotent Novikov algebras.

Rings and Algebras · Mathematics 2024-02-02 Kobiljon Abdurasulov , Ivan Kaygorodov , Abror Khudoyberdiyev

This paper deals with $n$-dimensional algebras, over any field, which have only trivial derivation (automorphism) and simple algebras. It is shown that the corresponding sets of algebras are not empty and, in algebraically closed field…

Rings and Algebras · Mathematics 2025-03-12 U. Bekbaev

In continuation of the article \cite{L} we classify all radically graded basic Hopf algebras of tame type over an algebraically closed field of characteristic 0.

Quantum Algebra · Mathematics 2013-01-07 Hua-Lin Huang , Gongxiang Liu

We study rational Cherednik algebras over an algebraically closed field of positive characteristic. We first prove several general results about category O, and then focus on rational Cherednik algebras associated to the general and special…

Representation Theory · Mathematics 2021-02-26 Martina Balagovic , Harrison Chen

In this paper, we present a complete classification of 2-dimensional endo-commutative straight algebras of type II$_1$ over any field. An endo-commutative algebra is a non-associative algebra in which the square mapping preserves…

Rings and Algebras · Mathematics 2024-03-01 Sin-Ei Takahasi , Kiyoshi Shirayanagi , Makoto Tsukada

We provide a complete classification of all tame and wild symmetric special multiserial algebras in terms of the underlying Brauer configuration. Our classification contains the symmetric special multiserial algebras of finite…

Representation Theory · Mathematics 2018-04-20 Drew Duffield

We first recall two equivalent definitions of Lie $2$-algebras, categorification of Lie algebras and $2$-term $L_\infty$-algebras. Then we present four different kinds of Lie $2$-algebras from $2$-plectic manifolds, Courant algebroids,…

Rings and Algebras · Mathematics 2021-04-01 Honglei Lang , Zhangju Liu

Using only the combinatorics of its defining ribbon graph, we classify the two-term tilting complexes, as well as their indecomposable summands, of a Brauer graph algebra. As an application, we determine precisely the class of Brauer graph…

Representation Theory · Mathematics 2018-01-08 Takahide Adachi , Takuma Aihara , Aaron Chan

We classify real or complex finite-dimensional $C^*$-algebras and their underlying fields from the properties of Birkhoff-James orthogonality. Application to strong Birkhoff-James orthogonality preservers is also given.

Operator Algebras · Mathematics 2024-11-26 Bojan Kuzma , Sushil Singla

We determine and classify all finite-dimensional Hopf algebras over an algebraically closed field of characteristic zero whose Hopf coradicals are isomorphic to dual Radford algebras of dimension $4p$ for a prime $p>5$. In particular, we…

Quantum Algebra · Mathematics 2022-09-27 Rongchuan Xiong , Naihong Hu

This paper is devoted to the classification and studying properties of complex unital $3$-dimensional structurable algebras. We provide a complete list of non-isomorphic classes, identifying five algebras for type $(2, 1)$ and two algebras…

Rings and Algebras · Mathematics 2026-03-05 Kobiljon Abdurasulov , Maqpal Eraliyeva , Ivan Kaygorodov

This article explores \Z_2-graded L_\infinity algebra structures on a 2|1-dimensional vector space. The reader should note that our convention on the parities is the opposite of the usual one, because we define our structures on the…

Quantum Algebra · Mathematics 2007-05-23 Derek Bodin , Alice Fialowski , Michael Penkava

We provide a complete classification of three-dimensional associative algebras over the real and complex number fields based on a complete elementary proof. We list up all the multiplication tables of the algebras up to isomorphism. We…

Rings and Algebras · Mathematics 2019-03-06 Yuji Kobayashi , Kiyoshi Shirayanagi , Sin-Ei Takahasi , Makoto Tsukada

We give the complete algebraic classification of all complex 4-dimensional nilpotent algebras. The final list has 234 (parametric families of) isomorphism classes of algebras, 66 of which are new in the literature.

Rings and Algebras · Mathematics 2021-11-02 Ivan Kaygorodov , Mykola Khrypchenko , Samuel A. Lopes

Classifying Frobenius algebras is a key question that has been addressed in various contexts. The structure of finite-dimensional Frobenius algebras depends on the base field and the dimension of the algebra, leading to different…

Rings and Algebras · Mathematics 2024-12-20 D. Asrorov , U. Bekbaev , I. Rakhimov

We present all real solvable algebraically rigid Lie algebras of dimension $n\leq 8$. The difference between the classification of complex and real rigid Lie algebras is analyzed.

Representation Theory · Mathematics 2007-05-23 J. M. Ancochea bermudez , R. Campoamor-Stursberg , M. Goze , L. Garcia Vergnolle

We provide a self contained, elementary, and geometrically-flavored classification of $8$-dimensional $2$-step nilpotent Lie algebras over algebraically closed fields of characteristic $\ne 2,3$, using the algebro-geometric arguments from…

Rings and Algebras · Mathematics 2026-02-06 Giovanni Bazzoni , Juan Rojo

We give a complete classification (up to isomorphism) of Lie conformal algebras which are free of rank two as $\C[\partial]$-modules, and determine their automorphism groups.

Representation Theory · Mathematics 2019-07-12 Rekha Biswal , Abdelkarim Chakhar , Xiao He

We complete the description of group gradings on finite-dimensional incidence algebras. Moreover, we classify the finite-dimensional graded algebras that can be realized as incidence algebras endowed with a group grading.

Rings and Algebras · Mathematics 2024-07-25 Helen Samara Dos Santos , Felipe Yukihide Yasumura
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