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A group is called capable if it is a central factor group. We consider the capability of certain nilpotent products of cyclic groups, and obtain a generalisation of a theorem of Baer for the small class case. The approach may also be used…

Group Theory · Mathematics 2007-05-23 Arturo Magidin

Let $G$ be a finite group and let $(P_i)_{i=1}^n$ be Sylow subgroups for distinct primes $p_1,\ldots,p_n$. We conjecture that there exists $x \in G$ such that $P_i \cap P_i^x$ is inclusion-minimal in $\{ P_i \cap P_i^g : g \in G\}$ for all…

Group Theory · Mathematics 2026-01-30 Francesca Lisi , Luca Sabatini

We define a notion of roundness for finite groups. Roughly speaking, a group is round if one can order its elements in a cycle in such a way that some natural summation operators map this cycle into new cycles containing all the elements of…

Group Theory · Mathematics 2009-11-12 D. Berend , M. D. Boshernitzan

The present paper is a note on the tensor degree of finite groups, introduced recently in literature. This numerical invariant generalizes the commutativity degree through the notion of nonabelian tensor square. We show two inequalities,…

Group Theory · Mathematics 2015-09-09 Ahmad M. A. Alghamdi , Francesco G. Russo

We determine the center of a meta-nilpotent quotient of a mapping-torus group. As a corollary, we introduce two invariants, which are quadratic forms, of knots and of mapping classes.

Geometric Topology · Mathematics 2019-12-12 Takefumi Nosaka

In this paper, we study simplicial commutative algebras with finite Andr\'e-Quillen homology. Here we restrict our focus to simplicial algebras having characteristic 2. Our aim is to find a generalization of results established by the…

Commutative Algebra · Mathematics 2007-05-23 James M Turner

Thompson's theorem stated that a finite group $G$ is solvable if and only if every $2$-generated subgroup of $G$ is solvable. In this paper, we prove some new criteria for both solvability and nilpotency of a finite group using certain…

Group Theory · Mathematics 2024-02-29 Hung P. Tong-Viet

We enumerate the fibres of commutator word maps over p-groups of nilpotency class less than p with exponent p. We also give some examples and enumerate the fibre sizes of all word maps over p-groups of class 2 with exponent p.

Group Theory · Mathematics 2016-02-15 Matthew Levy

We introduce a quantitative version of polynomial cohomology for discrete groups and show that it coincides with usual group cohomology when combinatorial filling functions are polynomially bounded. As an application, we show that Betti…

Group Theory · Mathematics 2026-02-11 Antonio López Neumann , Juan Paucar

The finite basis property is often connected with the finite rank property, which it entails. Many examples have been produced of finite rank varieties which are not finitely based. In this note, we establish a result on nilpotent…

Group Theory · Mathematics 2019-03-18 J. Almeida , M. H. Shahzamanian

We prove the statement in the title and exhibit examples of quotients of arbitrary nilpotency class. This answers a question by D. F. Holt.

Group Theory · Mathematics 2020-09-25 Keith Kearnes , Peter Mayr , Nik Ruškuc

Let $p$ be a prime and let $G$ be a finite group such that the smallest prime that divides $|G|$ is $p$. We find sharp bounds, depending on $p$, for the commuting probability and the average character degree to guarantee that $G$ is…

Group Theory · Mathematics 2023-08-21 Juan Martínez

In this paper, we determine the structure of the nilpotent multipliers of all pairs $(G,N)$ of finitely generated abelian groups where $N$ admits a complement in $G$. Moreover, some inequalities for the nilpotent multipliers of pairs of…

Group Theory · Mathematics 2021-04-02 Azam Hokmabadi , Fahimeh Mohammadzadeh , Behrooz Mashayekhy

We show that every finite group $G$ of size at least $3$ has a nilpotent subgroup of class at most $2$ and size at least $|G|^{1/32\log\log|G|}$. This answers a question of Pyber, and is essentially best possible.

Group Theory · Mathematics 2022-01-12 Luca Sabatini

We show that inductive limits of virtually nilpotent groups have strongly quasidiagonal C*-algebras, extending results of the first author on solvable virtually nilpotent groups. We use this result to show that the decomposition rank of the…

Operator Algebras · Mathematics 2018-01-25 Caleb Eckhardt , Elizabeth Gillaspy , Paul McKenney

The main part of this paper contains a description of a nilpotent quotient algorithm for L-presented groups and a report on applications of its implementation in the computer algebra system GAP. The appendix introduces two new infinite…

Group Theory · Mathematics 2009-11-27 Bettina Eick , René Hartung , Laurent Bartholdi

Let G be a finite p-solvable group and P a Sylow p-subgroup of G. Suppose that $\gamma_{l(p-1)}(P)\subseteq \gamma_r(P)^{p^s}$ for $l(p-1)<r+s(p-1)$, then the p-length is bounded by a function depending on l.

Group Theory · Mathematics 2013-11-27 Jon Gonzalez-Sanchez , Francesca Spagnuolo

We show that every finitely generated nilpotent group of class 2 occurs as the quotient of a finitely presented abelian-by-nilpotent group by its largest nilpotent normal subgroup.

Group Theory · Mathematics 2014-11-12 J. R. J. Groves , Ralph Strebel

We study the Modular Isomorphism Problem applying a combination of existing and new techniques. We make use of the small group algebra to give a positive answer for two classes of groups of nilpotency class 3. We also introduce a new…

Rings and Algebras · Mathematics 2023-09-25 L. Margolis , M. Stanojkovski

In this paper, we study the structure of finite groups with a large number of conjugacy classes of $p$-elements for some prime $p$. As consequences, we obtain some new criteria for the existence of normal $p$-complements in finite groups.

Group Theory · Mathematics 2020-12-09 Hung P. Tong-Viet