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We construct a finite-dimensional metabelian right-symmetric algebra over an arbitrary field that does not have a finite basis of identities.

Rings and Algebras · Mathematics 2024-01-05 Nurlan Ismailov , Ualbai Umirbaev

We give a presentation of cyclotomic q-Schur algebras by generators and defining relations. As an application, we give an algorithm for computing decomposition numbers of cyclotomic q-Schur algebras.

Representation Theory · Mathematics 2009-08-25 Kentaro Wada

We show how to construct a cubic partial cube from any simplicial arrangement of lines or pseudolines in the projective plane. As a consequence, we find nine new infinite families of cubic partial cubes as well as many sporadic examples.

Combinatorics · Mathematics 2007-06-13 David Eppstein

We consider algebras of rational power series over an alphabet $\Sigma$ with coefficients in a commutative semiring $K$ and characterize them as the free algebras in various classes of algebraic structures.

Formal Languages and Automata Theory · Computer Science 2011-04-14 Zoltan Esik , Werner Kuich

We compute the lengths of two particular cases of (possibly non-unital) composition algebras, namely, standard composition algebras and Okubo algebras over an arbitrary field $\mathbb{F}$. These results finish the complete description of…

Rings and Algebras · Mathematics 2023-12-07 Alexander Guterman , Svetlana Zhilina

We construct affine algebras with an arbitrary amount of simple modules of each dimension.

Rings and Algebras · Mathematics 2015-12-17 Be'eri Greenfeld

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

We prove that all definable pre-orders are atomic, in a finitely generated free algebra of a discriminator variety of finite similarity type which is generated by its finite members.

Logic · Mathematics 2016-06-27 H. Andréka , I. Németi

We construct finitely generated simple algebras with prescribed growth types, which can be arbitrarily taken from a large variety of (super-polynomial) growth types. This (partially) answers a question raised by the author in a recent…

Rings and Algebras · Mathematics 2017-08-29 Be'eri Greenfeld

Consider a diagram $\cdots \to F_3 \to F_2\to F_1$ of algebraic systems, where $F_n$ denotes the free object on $n$ generators and the connecting maps send the extra generator to some distinguished trivial element. We prove that (a) if the…

Rings and Algebras · Mathematics 2021-05-21 Alexandru Chirvasitu , Tao Hong

In this note we quantize the free $ * $-algebra generated by finitely many variables, which is a new example of the theory of Toeplitz quantization of $ * $-algebras as developed previously by the author. This is achieved by defining…

Mathematical Physics · Physics 2019-05-06 Stephen Bruce Sontz

We describe a set of defining relations for automorphism groups of finitely generated free algebras of Nielsen-Schreier varieties. In particular, this gives a representation of the automorphism groups of free Lie algebras by generators and…

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

In this article, we give two examples of finitely presented quadratic algebras (algebras presented by quadratic relations) of intermediate growth.

Rings and Algebras · Mathematics 2015-06-04 Dilber Kocak

A general framework for obtaining certain types of contracted and centrally extended algebras is presented. The whole process relies on the existence of quadratic algebras, which appear in the context of boundary integrable models.

High Energy Physics - Theory · Physics 2014-11-20 Anastasia Doikou , Konstadinos Sfetsos

We prove that a variety of algebras whose finitely generated members are free must be definitionally equivalent to the variety of sets, the variety of pointed sets, a variety of vector spaces over a division ring, or a variety of affine…

Rings and Algebras · Mathematics 2016-09-13 Keith A. Kearnes , Emil W. Kiss , Agnes Szendrei

We realize the free dendriform trialgebra on one generator, as well as several other examples of dendriform trialgebras, as sub-trialgebras of an algebra of noncommutative polynomials in infinitely many variables.

Combinatorics · Mathematics 2013-02-12 Jean-Christophe Novelli , Jean-Yves Thibon

We consider absolutely free nonassociative algebras and, more generally, absolutely free algebras with (maybe infinitely) many multilinear operations. Such algebras are described in terms of labeled reduced planar rooted trees. This allows…

Rings and Algebras · Mathematics 2009-03-25 Vesselin Drensky , Ralf Holtkamp

We construct irreducible unitary representations of a finitely generated free group which are weakly contained in the left regular representation and in which a given linear combination of the generators has an eigenvalue. When the…

Operator Algebras · Mathematics 2007-05-23 William L. Paschke

This paper presents a novel approach to constructing finite generating sets for infinitely generated ideals. By integrating algebraic and computational techniques, we provide a method to identify finite generators, demonstrated through…

Commutative Algebra · Mathematics 2025-08-08 Takafumi Shibuta

In the last decade, interest in projective MV-algebras has grown greatly; see [1], [5] e [6]. In this paper we establish a necessary and sufficient condition for n elements of the free n-generator MV-algebra to generate a projective…

Rings and Algebras · Mathematics 2014-11-17 Francesco Lacava , Donatop Saeli