Maria Ferrara

activity

20232025

collaborators

3 papers

math.GR2025

On cardinalities whose arithmetical properties determine the structure of solutions of the Yang--Baxter equation

Maria Ferrara, Marco Trombetti, Cindy Tsang

The aim of this paper is to provide purely arithmetical characterisations of those natural numbers $n$ for which every non-degenerate set-theoretic solution of cardinality $n$ of t…

math.GR2024

Finite skew braces of square-free order and supersolubility

Adolfo Ballester-Bolinches, Ramón Esteban-Romero, Maria Ferrara +2

The aim of this paper is to study supersoluble skew braces, a class of skew braces that encompasses all finite skew braces of square-free order. It turns out that finite supersolub…

math.GR2023

Joins of $σ$ -subnormal subgroups

Maria Ferrara, Marco Trombetti

Let $σ = {σ_{j} : j \in J}$ be a partition of the set $P$ of all prime numbers. A subgroup $X$ of a finite group $G$ is~\textit{ $σ$ -subnormal} in $G$ if there exists a cha…

On cardinalities whose arithmetical properties determine the structure of solutions of the Yang--Baxter equation

Finite skew braces of square-free order and supersolubility

Joins of σ-subnormal subgroups

Joins of $σ$ -subnormal subgroups