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We give upper bounds on the order of the automorphism group of a simple graph

Combinatorics · Mathematics 2007-05-23 Ilia Krasikov , Arie Lev , Bhalchandra D. Thatte

We initiate the study of analogues of symmetric spaces for the family of finite dihedral groups. In particular, we investigate the structure of the automorphism group, characterize the involutions of the automorphism group, and determine…

We show that if the complexity difference function p(n+1)-p(n) of a infinite minimal shift is bounded, then the the automorphism group of the one-sided shift is finite, and the automorphism group of the corresponding two-sided shift "modulo…

Dynamical Systems · Mathematics 2014-12-02 Ethan Coven , Reem Yassawi

We study the automorphism group of graphons (graph limits). We prove that after an appropriate "standardization" of the graphon, the automorphism group is compact. Furthermore, we characterize the orbits of the automorphism group on…

Combinatorics · Mathematics 2021-02-17 László Lovász , Balázs Szegedy

We classify the bi-canonical representations of finite automorphisms on Enriques surfaces. There are three types of non-trivial cases and examples are given explicitly by Horikawa models. In particular, finite non-semi-symplectic…

Algebraic Geometry · Mathematics 2015-04-06 Hisanori Ohashi

We describe the outer automorphism group of a one-ended fundamental group of a graph of groups, when edge groups are cyclic, and vertex groups are torsion-free with cyclic centralizers. We show that in this case the outer automorphism group…

Group Theory · Mathematics 2025-07-23 Dario Ascari , Montserrat Casals-Ruiz , Ilya Kazachkov

Adinkras are a graphical tool for studying off-shell representations of supersymmetry. In this paper we efficiently classify the automorphism groups of Adinkras relative to a set of local parameters. Using this, we classify Adinkras…

High Energy Physics - Theory · Physics 2010-09-09 B. L. Douglas , S. James Gates , Jingbo B. Wang

In this paper, we study group equations with occurrences of automorphisms. We describe equational domains in this class of equations. Moreover, we solve a number of open problem posed in universal algebraic geometry.

Algebraic Geometry · Mathematics 2020-03-26 Artem N. Shevlyakov

Let X be a flexible variety of F be an isomorphism of closed one-dimensional subschemes of $X$. We develop criteria which guarantee that F extends to au automorphism of X.

Algebraic Geometry · Mathematics 2021-04-05 Shulim Kaliman , David Udumyan

Let $1 \to N \to G \to H \to 1$ be an abelian extension. The purpose of this paper is to study the problem of extending automorphisms of $N$ and lifting automorphisms of $H$ to certain automorphisms of $G$.

Group Theory · Mathematics 2011-01-21 I. B. S. Passi , Mahender Singh , Manoj K. Yadav

A map on a group into itself is called a local automorphism if at any two points of the group, it can be interpolated by an automorphism of that group. In this paper we investigate the question of how local automorphisms of some classical…

Group Theory · Mathematics 2026-04-28 Lajos Molnár , Peter Šemrl

We show the uniqueness for the measure of maximal entropy for regular automorphisms of C^k.

Dynamical Systems · Mathematics 2008-12-22 Henry De Thelin

Let $G$ be a group. The directed endomorphism graph, $\dend(G)$ of $G$ is a directed graph with vertex set $G$ and there is a directed edge from the vertex $a$ to the vertex $b$ if $a \neq b$ and there exists an endomorphism on $G$ mapping…

Group Theory · Mathematics 2025-11-20 Midhuna V Ajith , Peter J Cameron , Mainak Ghosh , Aparna Lakshmanan S

The group of causal automorphisms on Minkowski space-time is given and its structure is analyzed.

Mathematical Physics · Physics 2015-05-18 Do-Hyung Kim

We determine explicitly the structure of the automorphism group of a parabolic Inoue surface. We also describe the quotients of the surface by typical cyclic subgroups of the automorphism group.

Algebraic Geometry · Mathematics 2009-04-01 A. Fujiki

The goal of this paper is to understand the set $\mathrm{End}(W)$ of endomorphisms of an irreducible spherical reflection group $W$. We do this in two ways: numerically, by deriving an explicit formula for $|\mathrm{End}(W)|$; and…

Group Theory · Mathematics 2026-05-28 Isabelle Steinmann

We construct equisingular semiuniversal deformations of Legendrian curves.

Algebraic Geometry · Mathematics 2019-02-21 Ana Rita Martins , Marco Silva Mendes , Orlando Neto

We classify smooth Fano threefolds with infinite automorphism groups.

Algebraic Geometry · Mathematics 2021-06-11 Ivan Cheltsov , Victor Przyjalkowski , Constantin Shramov

We compare real and complex dynamics for automorphisms of rational surfaces that are obtained by lifting \chg{some} quadratic birational maps of the plane. In particular, we show how to exploit the existence of an invariant cubic curve to…

Dynamical Systems · Mathematics 2018-08-28 Jeffrey Diller , Kyounghee Kim

In this short survey article, we try to list maximum number of known results on class preserving automorphisms of finite $p$-groups. We conclude the survey with some interesting (at least for the author) open problems on this topic.

Group Theory · Mathematics 2012-08-28 Manoj K. Yadav
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