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We describe derivations of several important associative and Lie rings of infinite matrices over general rings of coefficients.

Rings and Algebras · Mathematics 2023-10-19 O. Bezushchak

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

We describe the group of continuous automorphisms of all simple infinite-dimensional linearly compact Lie superalgebras and use it in order to classify F-forms of these superalgebras over any field F of characteristic zero.

Quantum Algebra · Mathematics 2015-06-26 Nicoletta Cantarini , Victor G. Kac

We study a new class of infinite dimensional Lie algebras, which has important applications to the theory of integrable equations. The construction of these algebras is very similar to the one for automorphic functions and this motivates…

Mathematical Physics · Physics 2009-11-10 S. Lombardo , A. V. Mikhailov

We describe derivations and automorphisms of infinite tensor products of matrix algebras. Using this description we show that for a countable--dimensional locally matrix algebra $A$ over a field $\mathbb{F}$ the dimension of the Lie algebra…

Rings and Algebras · Mathematics 2020-08-03 Oksana Bezushchak

We establish a correspondence between automorphisms and derivations on certain algebras of generalised power series. In particular, we describe a Lie algebra of derivations on a field $k(\!(G)\!)$ of generalised power series, exploiting our…

Rings and Algebras · Mathematics 2025-09-23 Vincent Bagayoko , Lothar Sebastian Krapp , Salma Kuhlmann , Daniel Panazzolo , Michele Serra

In the variety of all linear algebras over the infinite field the difference between geometric and automorphic equivalence of algebras can be big.

Rings and Algebras · Mathematics 2011-10-26 A. Tsurkov

The role of automorphisms of infinite-dimensional Lie algebras in conformal field theory is examined. Two main types of applications are discussed; they are related to the enhancement and reduction of symmetry, respectively. The structures…

Quantum Algebra · Mathematics 2007-05-23 J. Fuchs , C. Schweigert

The groups of automorphisms of the Lie algebras of unitriangular polynomial derivations are found.

Algebraic Geometry · Mathematics 2013-11-07 V. V. Bavula

We study endomorphisms and derivations of infinite dimensional cyclic Leibniz algebra.

Rings and Algebras · Mathematics 2021-04-14 Leonid A. Kurdachenko , Igor Ya. Subbotin , Viktoriia S. Yashchuk

We study automorphic Lie algebras and their applications to integrable systems. Automorphic Lie algebras are a natural generalisation of celebrated Kac-Moody algebras to the case when the group of automorphisms is not cyclic. They are…

Exactly Solvable and Integrable Systems · Physics 2020-10-23 Rhys T. Bury , Alexander V. Mikhailov

The automorphisms of all 4-dimensional, real Lie Algebras are presented in a comprehensive way. Their action on the space of $4\times 4$, real, symmetric and positive definite, matrices, defines equivalence classes which are used for the…

General Relativity and Quantum Cosmology · Physics 2008-11-26 T. Christodoulakis , G. O. Papadopoulos , A. Dimakis

In this paper we describe graded automorphisms and antiautomorphisms of finite order on matrix algebras endowed with a group gradings by a finite abelian group over an arbitrary algebraically closed field of charcteristic different from 2.

Rings and Algebras · Mathematics 2007-05-23 Yuri Bahturin , Mikhail Zaicev

We take a categorical approach to describe ternary derivations and ternary automorphisms of triangular algebras. New classes of automorphisms and derivations of triangular algebras are also introduced and studied.

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 describe the structure of the algebraic group of automorphisms of all simple finite dimensional Lie superalgebras. Using this and \'etale cohomology considerations, we list all different isomorphism classes of the corresponding twisted…

Rings and Algebras · Mathematics 2007-05-23 Dimitar Grantcharov , Arturo Pianzola

We describe isomorphisms of groups of several periodic infinite matrices and isomorphisms of groups of invertible elements of unital locally matrix algebras.

Rings and Algebras · Mathematics 2023-01-18 Oksana Bezushchak

This paper focuses on the derivations and automorphism groups of certain finite-dimensional associative algebras over the field of complex numbers. Using classification results for algebras of dimensions two, three, and four, along with…

Rings and Algebras · Mathematics 2025-01-06 Ahmed Zahari Abdou , Bouzid Mosbahi

This is a brief overview of a few selected chapters on automorphism groups of affine varieties. It includes some open questions.

Algebraic Geometry · Mathematics 2024-09-12 Hanspeter Kraft , Mikhail Zaidenberg

We present an overview of characteristic identities for Lie algebras and superalgebras. We outline methods that employ these characteristic identities to deduce matrix elements of finite dimensional representations. To demonstrate the…

Mathematical Physics · Physics 2015-06-23 Phillip S. Isaac , Jason L. Werry , Mark D. Gould
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