Skew-signings of positive weighted digraphs

Kawtar Attas, Abderrahim Boussaïri, Mohamed Zaidi

An arc-weighted digraph is a pair $(D,\omega )$ where $D$ is a digraph and $\omega$ is an \emph{arc-weight function} that assigns\ to each arc $uv$ of $D$ a nonzero real number $\omega (uv)$. Given…