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We introduce a new class of algebras called endo-commutative algebras in which the square mapping preserves multiplication, and provide a complete classification of endo-commutative algebras of dimension 2 over the field F_2 of two…

Rings and Algebras · Mathematics 2022-11-09 Sin-Ei Takahasi , Kiyoshi Shirayanagi , Makoto Tsukada

An endo-commutative algebra is a nonassociative algebra in which the square mapping preserves multiplication. In this paper, we give a complete classification of 2-dimensional endo-commutative straight algebras of rank one over an arbitrary…

Rings and Algebras · Mathematics 2023-05-30 Sin-Ei Takahasi , Kiyoshi Shirayanagi , Makoto Tsukada

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

Rings and Algebras · Mathematics 2023-07-06 Sin-Ei Takahasi , Kiyoshi Shirayanagi , Makoto Tsukada

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

An endo-commutative algebra is a nonassociative algebra in which the square mapping preserves multiplication. In this paper, we give a complete classification of endo-commutative curled algebras of dimension 2 over an arbitrary non-trivial…

Rings and Algebras · Mathematics 2023-04-26 Sin-Ei Takahasi , Kiyoshi Shirayanagi , Makoto Tsukada

A complete classifications, up to isomorphism, of two-dimensional associative and diassociative algebras over any basic field are given.

Rings and Algebras · Mathematics 2023-07-20 I. S. Rakhimov

A complete classification of two-dimensional algebras over algebraically closed fields is provided

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

In the paper we give a complete classification of $2$-dimensional evolution algebras over algebraically closed fields, describe their groups of automorphisms and derivation algebras.

Rings and Algebras · Mathematics 2017-11-22 H. Ahmed , U. Bekbaev , I. Rakhimov

The work is devoted to the variety of $2$-dimensional algebras over an algebraically closed field. Firstly, we classify such algebras modulo isomorphism. Then we describe the degenerations and the closures of principal algebra series in the…

Rings and Algebras · Mathematics 2020-04-03 Ivan Kaygorodov , Yury Volkov

A curled algebra is a non-associative algebra in which $x$ and $x^2$ are linearly dependent for every element $x$. An algebra is called endo-commutative, if the square mapping from the algebra to itself preserves multiplication. In this…

Rings and Algebras · Mathematics 2025-07-29 Sin-Ei Takahasi , Kiyoshi Shirayanagi

We associate an square to any two dimensional evolution algebra. This geometric object is uniquely determined, does not depend on the basis and describes the structure and the behaviour of the algebra. We determine the identities of degrees…

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

Using the algebraic classification of all $2$-dimensional algebras, we give the algebraic classification of all $2$-dimensional rigid, conservative and terminal algebras over an algebraically closed field of characteristic 0. We have the…

Rings and Algebras · Mathematics 2018-10-04 Antonio Jesús Calderón , Amir Fernández Ouaridi , Ivan Kaygorodov

We prove that two finite-dimensional commutative algebras over an algebraically closed field are isomorphic if and only if they give rise to isomorphic representations of the category of finite sets and surjective maps.

Rings and Algebras · Mathematics 2011-04-05 S. S. Podkorytov

A description of group automorphisms of all two-dimensional algebras, considered up to isomorphism, over any basic field is provided.

Rings and Algebras · Mathematics 2024-11-19 Sh. Eshmirzayev , U. Bekbaev

We will study evolution algebras $A$ which are free modules of dimension $2$ over domains. Furthermore, we will assume that these algebras are perfect, that is $A^2=A$. We start by making some general considerations about algebras over…

Rings and Algebras · Mathematics 2022-04-19 Yolanda Cabrera Casado , Dolores Martín Barquero , Cándido Martín González

The classification, up to isomorphism, of two-dimensional (not necessarily commutative) Jordan algebras over algebraically closed fields and $\mathbb{R}$ is presented in terms of their matrices of structure constants.

Rings and Algebras · Mathematics 2018-12-10 H. Ahmed , U. Bekbaev , I. Rakhimov

A complete classifications of two-dimensional general, commutative, commutative Jordan, division and evolution real algebras are given. In the case of evolution algebras their groups of automorphisms and derivation algebras are described as…

Rings and Algebras · Mathematics 2018-12-04 U. Bekbaev

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

The automorphisms groups and derivation algebras of all two-dimensional algebras over algebraically closed fields are described.

Rings and Algebras · Mathematics 2018-12-10 H. Ahmed , U. Bekbaev , I. Rakhimov
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