Zeros of irreducible characters in factorised groups

M. J. Felipe, A. Martínez-Pastor, V. M. Ortiz-Sotomayor

An element $g$ of a finite group $G$ is said to be vanishing in $G$ if there exists an irreducible character $\chi$ of $G$ such that $\chi (g)=0$; in this case, $g$ is also called a zero…