Christopher Duffy

most citedSwitching

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-edge-coloured graphs using non-Abelian groups

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math.CO2023

Quasi-Transitive Mixed Graphs and Undirected Squares of Oriented Graphs

Christopher Duffy

We consider the problem of classifying those graphs that arise as an undirected square of an oriented graph by generalising the notion of quasi-transitive directed graphs to mixed…

math.CO2022★ 1 cited

Switching $m$ -edge-coloured graphs using non-Abelian groups

Chris Duffy, Gary MacGillivray, Ben Tremblay

Let $G$ be a graph whose edges are each assigned one of the $m$ -colours $1, 2, \dots, m$ , and let $Γ$ be a subgroup of $S_{m}$ . The operation of switching at a vertex $x$ with respe…

Quasi-Transitive Mixed Graphs and Undirected Squares of Oriented Graphs

Switching m-edge-coloured graphs using non-Abelian groups

Switching $m$ -edge-coloured graphs using non-Abelian groups