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We provide a clarification of the classification of two-dimensional algebras over an arbitrary base field. Using this clarification, we determine the number of non-isomorphic two-dimensional algebras over a finite field.

Rings and Algebras · Mathematics 2026-05-26 U. Bekbaev

Let $\Lambda$ be a finite dimensional algebra over an algebraically closed field $k$. We survey some results on algebras of finite global dimension and address some open problems.

Representation Theory · Mathematics 2012-09-11 Dieter Happel , Dan Zacharia

Over an arbitrary field of positive characteristic we construct an example of a locally finite variety of Lie algebras which does not have a finite basis of its polynomial identities. As a consequence we construct varieties of Lie algebras…

Rings and Algebras · Mathematics 2023-01-31 Vesselin S. Drensky

In this paper, some left-symmetric algebras are constructed from linear functions. They include a kind of simple left-symmetric algebras and some examples appearing in mathematical physics. Their complete classification is also given, which…

Quantum Algebra · Mathematics 2007-11-24 Chengming Bai

We prove the Freiheitssatz for right-symmetric algebras and the decidability of the word problem for right-symmetric algebras with a single defining relation. We also prove that two generated subalgebras of free right-symmetric algebras are…

Rings and Algebras · Mathematics 2020-01-03 Daniyar Kozybaev , Leonid Makar-Limanov , Ualbai Umirbaev

We construct non-isogenous simple ordinary abelian varieties over an algebraic closure of a finite field with isomorphic endomorphism algebras.

Algebraic Geometry · Mathematics 2022-05-05 Yuri G. Zarhin

We show that, for each finite algebra A, either it has symmetric term operations of all arities or else some finite algebra in the variety generated by A has two automorphisms without a common fixed point. We also show this two-automorphism…

Rings and Algebras · Mathematics 2016-05-16 Catarina Carvalho , Andrei Krokhin

This paper is the second in a series of three, the aim of which is to construct algebraic geometry over a free metabelian Lie algebra $F$. For the universal closure of free metabelian Lie algebra of finite rank $r \ge 2$ over a finite field…

Algebraic Geometry · Mathematics 2007-10-23 E. Daniyarova , I. Kazachkov , V. Remeslennikov

We construct a nil algebra over a countable field which has finite but non-zero Gelfand-Kirillov dimension.

Rings and Algebras · Mathematics 2007-05-23 T H Lenagan , Agata Smoktunowicz

In this paper, we describe an elementary method for counting the number of non-isomorphic algebras of a fixed dimension over a given finite field. We show how this method works for the explicit example of $2$-dimensional algebras over the…

Rings and Algebras · Mathematics 2019-09-30 Nikolaas D. Verhulst

We describe the structure of finite dimensional selfinjective algebras over an arbitrary field without short cycles of indecomposable modules.

Representation Theory · Mathematics 2017-10-23 Alicja Jaworska-Pastuszak , Andrzej Skowroński

In this paper we describe all, up to isomorphism, left unital, right unital and unital algebra structures on two-dimensional vector space over any algebraically closed field and $\mathbb{R}$. We tabulate the algebras with the units.

Rings and Algebras · Mathematics 2018-12-04 H. Ahmed , U. Bekbaev , I. Rakhimov

We construct a series of examples of non--flat non--homogeneous parabolic geometries that carry a symmetry of the parabolic geometry at each point.

Differential Geometry · Mathematics 2016-03-22 Jan Gregorovič , Lenka Zalabová

A group is metabelian if its commutator subgroup is abelian. For finitely generated metabelian groups, classical commutative algebra, algebraic geometry and geometric group theory, especially the latter two subjects, can be brought to bear…

Group Theory · Mathematics 2012-03-27 Gilbert Baumslag , Roman Mikhailov , Kent E. Orr

We deal with equations over free semilattice of infinite rank and prove that any infinite consistent system of equations is equivalent to its finite subsystem. Moreover, we describe irreducible algebraic sets and solve some algorithmic…

Algebraic Geometry · Mathematics 2014-01-14 Artem N. Shevlyakov

A structure of a left-symmetric algebra on the set of all derivations of a free algebra is introduced such that its commutator algebra becomes the usual Lie algebra of derivations. Left and right nilpotent elements of left-symmetric…

Rings and Algebras · Mathematics 2020-01-03 Ualbai Umirbaev

In this paper, for a given finitely generated algebra (an algebraic structure with arbitrary operations and no predicates) A we study finitely generated limit algebras of A, approaching them via model theory and algebraic geometry. Along…

Algebraic Geometry · Mathematics 2008-08-20 E. Daniyarova , A. Myasnikov , V. Remeslennikov

In the paper we provide some polynomial identities for finite-dimensional algebras. A list of well known single polynomial identities is exposed and the classification of all $2$-dimensional algebras with respect to these identities is…

Rings and Algebras · Mathematics 2020-01-03 H. Ahmed , U. Bekbaev , I. Rakhimov

We study maximal subalgebras of an arbitrary finite dimensional algebra over a field, and obtain full classification/description results of such algebras. This is done by first obtaining a complete classification in the semisimple case, and…

Rings and Algebras · Mathematics 2017-08-31 Miodrag Iovanov , Alexander Sistko

We give a full classification, up to equivalence, of finite-dimensional graded division algebras over the field of real numbers. The grading group is any abelian group.

Rings and Algebras · Mathematics 2018-03-06 Yuri Bahturin , Mikhail Zaicev
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