3 papers
math.CO2026
An infinite family of intransitive directed strongly regular graphs with rank 6 Weisfeiler--Leman closure
Štefan Gyürki
We construct an infinite family of directed strongly regular graphs (DSRGs) with intransitive full automorphism groups whose Weisfeiler--Leman closure are association schemes of ra…
math.CO2026
Directed strongly regular graphs from groups, loops and quasigroups
Štefan Gyürki, Mikhail Klin
We introduce four infinite families of directed strongly regular graphs of orders and . The constructions are described in terms of groups, quasigroups, loops and thei…
math.CO2023
Orientably-regular embeddings of complete multigraphs
Stefan Gyurki, Sona Pavlikova, Jozef Siran
An embedding of a graph on an orientable surface is orientably-regular (or rotary, in an equivalent terminology) if the group of orientation-preserving automorphisms of the embeddi…