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The group ring of the automorphism group of a p-group is studied using the automorphism groups of subgroups and quotient groups of P.

Representation Theory · Mathematics 2007-11-12 John Martino , Stewart Priddy

We study orbit closures and stationary measures for groups of automorphisms of $p$-adic affine surfaces.

Algebraic Geometry · Mathematics 2024-10-14 Serge Cantat , Seung Uk Jang

We study automorphism groups of formal matrix algebras. We also consider automorphisms of ordinary matrix algebras (in particular, triangular matrix algebras).

Rings and Algebras · Mathematics 2022-09-01 Piotr Krylov , Askar Tuganbaev

This is a survey on the automorphism groups in various classes of affine algebraic surfaces and the algebraic group actions on such surfaces. Being infinite-dimensional, these automorphism groups share some important features of algebraic…

Algebraic Geometry · Mathematics 2025-03-06 Sergei Kovalenko , Alexander Perepechko , Mikhail Zaidenberg

We study the automorphism groups of finite-dimensional cyclic Leibniz algebras. In this connection, we consider the relationships between groups, modules over associative rings and Leibniz algebras.

Rings and Algebras · Mathematics 2021-08-21 Leonid A. Kurdachenko , Aleksandr A. Pypka , Igor Ya. Subbotin

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 study the group of automorphisms of the affine plane preserving some given curve, over any field. The group is proven to be algebraic, except in the case where the curve is a bunch of parallel lines. Moreover, a classification of the…

Algebraic Geometry · Mathematics 2016-11-24 Jérémy Blanc , Immanuel Stampfli

In this note, finite type epimorphisms of rings are characterized.

Commutative Algebra · Mathematics 2018-03-20 Abolfazl Tarizadeh

In this paper we study the existence of at least one non-inner automorphism of order p of a finite thin p-group, for any prime p.

Group Theory · Mathematics 2016-04-26 Marco Ruscitti , Leire Legarreta

The article is devoted to microbundles over topological rings. Their structure, homomorphisms, automorphisms and extensions are studied. Moreover, compactifications and inverse spectra of microbundles over topological rings are…

General Topology · Mathematics 2019-03-29 Sergey V. Ludkovsky

We study the automorphism groups attached to a free algebra with multiple, possibly infinitely many, composition laws. As an application, we prove that the automorphism group of finitely generated vertex algebras over noetherian rings are…

Quantum Algebra · Mathematics 2026-05-18 Terry Gannon , Robin Mader , Arturo Pianzola

We develop technics of birational geometry to study automorphisms of affine surfaces admitting many distinct rational fibrations, with a particular focus on the interactions between automorphisms and these fibrations. In particular, we…

Algebraic Geometry · Mathematics 2009-06-22 Jérémy Blanc , Adrien Dubouloz

This paper is devoted to study local automorphisms of $p$-filiform Leibniz algebras. We prove that $p$-filiform Leibniz algebras as a rule admit local automorphisms which are not automorphisms.

Rings and Algebras · Mathematics 2023-06-21 Bakhtiyor Yusupov

We introduce and investigate an equivalence relation called "radical parallelism" on the projective line over a ring. It is closely related with the Jacobson radical of the underlying ring. As an application, we present a rather general…

Algebraic Geometry · Mathematics 2013-04-02 Andrea Blunck , Hans Havlicek

We study automorphism groups of real del Pezzo surfaces, concentrating on finite groups acting minimally on them. As a result, we obtain a vast part of classification of finite subgroups in the real plane Cremona group.

Algebraic Geometry · Mathematics 2021-12-14 Egor Yasinsky

The main purpose of this paper is to describe some published results and outline corresponding approaches which when applied to automorphism groups of algebras or groups establish that these groups are linear or non-linear.

Group Theory · Mathematics 2017-09-28 Vitalii Roman'kov

The polynomial automorphisms of the affine plane over a field K form a group which has the structure of an amalgamated free product. This well-known algebraic structure can be used to determine some key results about the symmetry and…

Dynamical Systems · Mathematics 2014-09-30 Michael Baake , John A. G. Roberts

On an affine variety $X$ defined by homogeneous polynomials, every line in the tangent cone of $X$ is a subvariety of $X$. However there are many other germs of analytic varieties which are not of cone type but contain ``lines'' passing…

Algebraic Geometry · Mathematics 2007-05-23 Guangfeng Jiang , Mutsuo Oka

Linear forms in logarithms over connected commutative algebraic groups over the algebraic numbers field have been studied widely. However, the theory of linear forms in logarithms over noncommutative algebraic groups have not been developed…

Number Theory · Mathematics 2015-12-01 Mario Huicochea

We construct solitons in affine orbifold nets associated with outer automorphisms, and we show that our construction gives all the twisted representations of the fixed point subnet. This allows us to settle a number of questions concerning…

Operator Algebras · Mathematics 2010-02-16 Feng Xu
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