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In this paper we study the existence of at least one non-inner automorphism of order p in a finite normally constrained p-group when p is an odd prime.

Group Theory · Mathematics 2016-10-10 Norberto Gavioli , Leire Legarreta , Marco Ruscitti

Many common finite p-groups admit automorphisms of order coprime to p, and when p is odd, it is reasonably difficult to find finite p-groups whose automorphism group is a p-group. Yet the goal of this paper is to prove that the automorphism…

Group Theory · Mathematics 2013-05-09 Geir T. Helleloid , Ursula Martin

We record for reference a detailed description of the automorphism groups of the groups of order $p^{2} q$, where $p$ and $q$ are distinct primes.

Group Theory · Mathematics 2025-09-12 E. Campedel , A. Caranti , I. Del Corso

We consider the structure of finite $p$-groups $G$ having precisely three characteristic subgroups, namely $1$, $\Phi(G)$ and $G$. The structure of $G$ varies markedly depending on whether $G$ has exponent $p$ or $p^2$, and, in both cases,…

Group Theory · Mathematics 2014-05-26 S. P. Glasby , P. P. Palfy , Csaba Schneider

We characterize all finite p-groups G of order p^n(n\leq 6), where p is a prime for n\leq 5 and an odd prime for n = 6, such that the center of the inner automorphism group of G is equal to the group of central automorphisms of G.

Group Theory · Mathematics 2011-11-03 Deepak Gumber , Mahak Sharma

In this paper we study the existence of at least one non-inner automorphism of order p of a non-abelian finite p-group of coclass 3, where p is a prime integer such that p is different from 3.

Group Theory · Mathematics 2016-04-28 Marco Ruscitti , Leire Legarreta , Manoj K. Yadav

In this paper, we construct an infinite families of group $G$ of order $4p^m$ which can be an automorphism group of some regular polytope with type $\{p, 2p\}$, where $m \geq 3$ and $p$ is an odd prime. For $p=3$, our polytopes are the…

Combinatorics · Mathematics 2021-07-08 Dong-Dong Hou , Ting-Ting Kong , Hai-Peng Qu

This thesis has three goals related to the automorphism groups of finite $p$-groups. The primary goal is to provide a complete proof of a theorem showing that, in some asymptotic sense, the automorphism group of almost every finite…

Group Theory · Mathematics 2007-11-20 Geir T. Helleloid

This paper is devoted to a study of the automorphism groups of three series of finite dimensional special odd Hamiltonian superalgebras $\mathfrak{g}$ over a field of prime characteristic. Our aim is to characterize the connections between…

Rings and Algebras · Mathematics 2013-04-25 Liming Tang , Wende Liu

Given positive integers $p$ and $m$, where $p$ is assumed to be an odd prime, we determine the automorphism groups of $p$-groups $J$, $H$, and $K$ of orders $p^{7m}$, $p^{6m}$, and $p^{5m}$, and nilpotency classes 5, 4, and 3, respectively,…

Group Theory · Mathematics 2024-05-22 Alexander Montoya Ocampo , Fernando Szechtman

This survey on the automorphism groups of finite p-groups focuses on three major topics: explicit computations for familiar finite p-groups, such as the extraspecial p-groups and Sylow p-subgroups of Chevalley groups; constructing p-groups…

Group Theory · Mathematics 2007-05-23 Geir T. Helleloid

Let $G$ be a finite non-abelian $p$-group admitting cyclic center and $p$ be an odd prime. In this paper, we prove that if $C_{G}(Z(\gamma_{3}(G)G^{p}))\nleqslant\gamma_{3}(G)G^{p}$, then $G$ has a non-inner automorphism of order $p$.

Group Theory · Mathematics 2025-05-08 Xuesong Ma , Wei Xu

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

Let $G$ be a finite group having a factorisation $G=AB$ into subgroups $A$ and $B$ with $B$ cyclic and $A\cap B=1,$ and let $b$ be a generator of $B$. The associated skew-morphism is the bijective mapping $f:A \to A$ well defined by the…

Group Theory · Mathematics 2015-11-24 István Kovács , Roman Nedela

Let $G$ be a group. An automorphism of $G$ is called intense if it sends each subgroup of $G$ to a conjugate; the collection of such automorphisms is denoted by $\mathrm{Int}(G)$. In the special case in which $p$ is a prime number and $G$…

Group Theory · Mathematics 2023-09-25 Mima Stanojkovski

Let $G$ be a finite $p$-group.

Group Theory · Mathematics 2017-03-07 Rohit Garg , Deepak Gumber

In this paper we give a classification of the rank two p-local finite groups for odd p. This study requires the analisis of the possible saturated fusion systems in terms of the outer automorphism group ant the proper F-radical subgroups.…

Algebraic Topology · Mathematics 2010-06-01 Antonio Diaz , Albert Ruiz , Antonio Viruel

A conjecture of Berkovich asserts that every non-simple finite p-group has a non-inner automorphism of order p. This conjecture is far from being proved despite the great effort devoted to it. In this paper we prove it for p-groups of…

Group Theory · Mathematics 2013-01-03 Yassine Guerboussa , Miloud Reguiat

A few facts concerning the phrase "the automorphism groups become larger at special points of the moduli of K3 surfaces" are presented. It is also shown that the automorphism groups are of infinite order over a dense subset in any…

Algebraic Geometry · Mathematics 2007-05-23 Keiji Oguiso

We discuss the structure of finite subgroups acting on minimal Severi--Brauer varieties and provide a complete description of such groups for the varieties of dimension $p-1$, where $p \geqslant 3$ is prime.

Algebraic Geometry · Mathematics 2025-03-27 Anna Savelyeva
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