L. Morotti

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20242026

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math.GR2026

Groups with a conjugacy class that is the difference of two normal subgroups

Mark L. Lewis, Lucia Morotti, Emanuele Pacifici +2

We consider finite groups having a conjugacy class that is the difference of two normal subgroups. That is, suppose $G$ is a group and $M$ and $N$ are normal subgroups so that $N <…

math.GR2024

On common zeros of characters of finite groups

Mark L. Lewis, Lucia Morotti, Emanuele Pacifici +2

Let $G$ be a finite group, and let $Irr (G)$ denote the set of the irreducible complex characters of $G$ . An element $g \in G$ is called a vanishing element of $G$ if there ex…