G. Erskine

collaborators

2 papers

math.CO2026

Vertex-transitive closures of graphs

Martin BachratÃ½, Grahame Erskine, Å tefÃ¡nia GlevitzkÃ¡ +2

A vertex-transitive closure of $I^$ is a vertex-transitive supergraph of $I^$ on the same vertex set. The vertex-transitive number of a graph $I^$ , denoted by $d_{v t} (I^)$ , is the…

math.CO2024

Cycle switching in Steiner triple systems of order 19

Grahame Erskine, Terry S. Griggs

Cycle switching is a particular form of transformation applied to isomorphism classes of a Steiner triple system of a given order $v$ (an $S T S (v)$ ), yielding another $S T S (v)$ . This…