8 citations · 35 across the 15 of their papers we have counts for
4 papers · 1 filter
Up to a double cover, every regular connected graph is isomorphic to a Schreier graph
Paul-Henry Leemann
We prove that every connected locally finite regular graph has a double cover which is isomorphic to a Schreier graph.
Cayley graphs with few automorphisms
Paul-Henry Leemann, Mikael de la Salle
We show that every finitely generated group G with an element of order at least admits a locally finite directed Cayley graph with automorphism group equal to G.…
Schreier graphs: transitivity and coverings
Paul-Henry Leemann
We give a characterization of isomorphisms between Schreier graphs in terms of the groups, subgroups and generating systems. This characterization may be thought as a graph analog…
Lamplighter groups, de Bruijn graphs, spider-web graphs and their spectra
Rostislav Grigorchuk, Paul-Henry Leemann, Tatiana Nagnibeda
We describe the infinite family of spider-web graphs , , and , studied in physical literature as tensor products of well-known de Brujin…