Identifying graph automorphisms using determining sets.
Impossible Specifications for the Modular Group.
Infinitely many hypermaps of a given type and genus.
Integral Cayley graphs defined by greatest common divisors.
Integral Cayley graphs over Abelian groups.
Integral Cayley Sum Graphs and Groups
For any positive integer k, let Ak denote the set of finite abelian groups G such that for any subgroup H of G all Cayley sum graphs CayS(H, S) are integral if |S| = k. A finite abelian group G is called Cayley sum integral if for any subgroup H of G all Cayley sum graphs on H are integral. In this paper, the classes A2 and A3 are classified. As an application, we determine all finite Cayley sum integral groups.
Integral quartic Cayley graphs on Abelian groups.
Intersection graphs of finite abelian groups
Intersection graphs of subgroups of finite groups
In this paper we classify finite groups with disconnected intersection graphs of subgroups. This solves a problem posed by Csákány and Pollák.
Intersections of Finitely Generated Subgroups of Free Groups and Resolutions de Graphs.
Invers SEMIGROUPS ON GRAPHS.
Involutory Pairs of Vertices in Transitive Graphs
Isomorphisms of Cayley graphs of a free Abelian group.
Isomorphisms of cyclic abelian covers of symmetric digraphs. II.
Isomorphisms of products of infinite connected graphs
Isomorphisms of products of infinite graphs
Isotopy of digraphs