L. K. Jørgensen

collaborators

2 papers

math.CO2020

Linkedness of Cartesian products of complete graphs

Leif K. Jorgensen, Guillermo Pineda-Villavicencio, Julien Ugon

This paper is concerned with the linkedness of Cartesian products of complete graphs. A graph with at least $2 k$ vertices is {\it $k$ -linked} if, for every set of $2 k$ distinct ver…

math.CO2014

Normally Regular Digraphs

Leif K Jørgensen

A normally regular digraph with parameters $(v, k, λ, μ)$ is a directed graph on $v$ vertices whose adjacency matrix $A$ satisfies the equation $A A^{t} = k I + λ (A + A^{t}) + μ (J - I - A - A^{t})$ . This…