4 papers
Enumeration of orientably-regular maps with automorphism group $\PGam(2,2^p)$ for prime
Yan-Quan Feng, Soňa Pavlíková, Jozef Širáň +2
With help of group characters we enumerate orientably-regular maps of a given type with automorphism group isomorphic to $\PGam(2,2^p)$ for prime .
Token graphs of Cayley graphs as lifts
C. Dalfó, M. A. Fiol, S. Pavlíková +1
This paper describes a general method for representing -token graphs of Cayley graphs as lifts of voltage graphs. This allows us to construct line graphs of circulant graphs and…
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…
The spectra of lifted digraphs
C. Dalfó, M. A. Fiol, J. Širáň
We present a method to derive the complete spectrum of the lift of a base digraph , with voltage assignments on a (finite) group . The method is based on assigning to $…