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The aim of this paper is to present a complete description of the structure of finite subsets with small doubling property in ordered nilpotent groups of class 2.

Number Theory · Mathematics 2018-08-16 Gregory A. Freiman , Marcel Herzog , Patrizia Longobardi , Mercede Maj , Yonutz V. Stanchescu

We describe the structure of ``K-approximate subgroups'' of torsion-free nilpotent groups, paying particular attention to Lie groups. Three other works, by Fisher-Katz-Peng, Sanders and Tao, have appeared which independently address related…

Combinatorics · Mathematics 2009-06-22 Emmanuel Breuillard , Ben Green

Let p be a prime number. We give the explicit structure of 2- nilpotent multiplier for each finite 2-generator p-group of class two. Moreover, 2-capable groups in that class are characterized.

Group Theory · Mathematics 2021-09-14 F. Johari , A. Kaheni

The Fitting subgroup of a type-definable group in a simple theory is relatively definable and nilpotent. Moreover, the Fitting subgroup of a supersimple hyperdefinable group has a normal hyperdefinable nilpotent subgroup of bounded index,…

Logic · Mathematics 2017-05-04 Daniel Palacin , Frank Olaf Wagner

We construct supercharacter theories of finite unipotent groups in the orthogonal, symplectic and unitary types. Our method utilizes group actions in a manner analogous to that of Diaconis and Isaacs in their construction of supercharacters…

Representation Theory · Mathematics 2014-12-16 Scott Andrews

Given a finite group $G$, we denote by $\nu(G)$ the probability that two randomly chosen elements of $G$ generate a nilpotent subgroup. We prove that if $\nu(G)>1/12,$ then $G$ is solvable.

Group Theory · Mathematics 2026-04-07 Andrea Lucchini

Let $G$ be a finite group and $H$ be a subgroup of $G$. Then $H$ is said to be a $p$-$CAP$-subgroup of $G$, if $H$ covers or avoids any $pd$-chief factor of $G$. Furthermore, $H$ is said to be a strong $p$-$CAP$-subgroup of $G$, if for any…

Group Theory · Mathematics 2023-12-29 Shengmin Zhang

We give a new, geometric proof of the section conjecture for fixed points of finite group actions on projective curves of positive genus defined over the field of complex numbers, as well as its natural nilpotent analogue. As a part of our…

Algebraic Geometry · Mathematics 2013-09-02 Ambrus Pal

We find a short equational basis for the variety of $3$-supernilpotent loops. We also present a conceptually simple proof that $k$-nilpotence and $k$-supernilpotence are equivalent for groups. Connections between $3$-supernilpotent loops,…

Group Theory · Mathematics 2023-03-03 David Stanovský , Petr Vojtěchovský

In this paper we find a necessary and sufficient condition for a finite nilpotent group to have an abelian central automorphism group.

Group Theory · Mathematics 2007-05-23 Ayan Mahalanobis

We prove that if a group is nilpotent (resp. metabelian), then so is the subgroup of its automorphism group generated by all polynomial automorphisms.

Group Theory · Mathematics 2007-05-23 G. Endimioni

Recall that a $p$-group of order $p^ {n} >p^ {3} $ is of maximal class, if its nilpotency class is $n-1$. In this paper, we study the $p$-groups of maximal class. Furthermore, we introduce a subgroup of a $p$-group of maximal class called…

Group Theory · Mathematics 2022-10-05 Noureddine Snanou

We discuss the notion of the universal relatively hyperbolic structure on a group which is used in order to characterize relatively hyperbolic structures on the group. We also study relations between relatively hyperbolic structures on a…

Group Theory · Mathematics 2012-05-11 Yoshifumi Matsuda , Shin-ichi Oguni , Saeko Yamagata

A connected Lie group admitting an expansive automorphism is known to be nilpotent, but all nilpotent Lie groups do not admit expansive automorphism. In this article, we find sufficient conditions for a class of nilpotent Lie groups to…

Group Theory · Mathematics 2019-09-10 Manoj Choudhuri , C. R. E. Raja

We introduce and study some families of groups whose irreducible characters take values on quadratic extensions of the rationals. We focus mostly on a generalization of inverse semi-rational groups, which we call uniformly semi-rational…

Group Theory · Mathematics 2025-07-01 Ángel del Río , Marco Vergani

We develop JSJ decomposition theory of pro-p groups.

Group Theory · Mathematics 2025-12-01 Pavel Zalesskii

In this paper we generalize the definition of a multilinear map to arbitrary groups and develop a novel idea of multilinear cryptosystem using nilpotent group identities.

Cryptography and Security · Computer Science 2019-09-24 Delaram Kahrobaei , Antonio Tortora , Maria Tota

This paper explores the properties of multiplicative Lie algebra structures on a nilpotent group of class $2$. We also present a method for determining a multiplicative Lie algebra structure on a group that serves as an extension of one Lie…

Group Theory · Mathematics 2024-09-26 Deepak Pal , Amit Kumar , Sumit Kumar Upadhyay

Finite groups with given systems of permuteral and strongly permuteral subgroups are studied. New characterizations of w-supersoluble and supersoluble groups are received.

Group Theory · Mathematics 2013-05-14 A. F. Vasil'ev , V. A. Vasil'ev , T. I. Vasil'eva

In this paper we study the nilpotency of certain groups of self homotopy equivalences. Our main goal is to extend, to localized homotopy groups and/or homotopy groups with coefficients, the general principle of Dror and Zabrodsky by which a…

Algebraic Topology · Mathematics 2009-06-17 Maxence Cuvilliez , Aniceto Murillo , Antonio Viruel
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