István Kovács

activity

20102013

most citedAutomorphism groups of rational circulant graphs through the use of Schur rings

2 citations · 3 across the 3 of their papers we have counts for

collaborators

3 papers

math.CO2013

The number of cyclic configurations of type $(v_{3})$ and the isomorphism problem

Sergio Hiroki Koike-Quintanar, István Kovács, Tomaž Pisanski

A configuration of points and lines is cyclic if it has an automorphism which permutes its points in a full cycle. A closed formula is derived for the number of non-isomorphic conn…

math.CO2012★ 1 cited

Isomorphic tetravalent cyclic Haar graphs

Sergio Hiroki Koike-Quintanar, István Kovács

Let $S$ be a subset of the cyclic group $Z_{n}$ . The cyclic Haar graph $H (Z_{n}, S)$ is the bipartite graph with color classes $Z_{n}^{+}$ and $Z_{n}^{-},$ and edges ${x^{+}, y^{-}},$ where $x…

math.CO2010★ 2 cited

Automorphism groups of rational circulant graphs through the use of Schur rings

Mikhail Klin, István Kovács

The paper concerns the automorphism groups of Cayley graphs over cyclic groups which have a rational spectrum (rational circulant graphs for short). With the aid of the techniques…

The number of cyclic configurations of type (v3​) and the isomorphism problem

Isomorphic tetravalent cyclic Haar graphs

Automorphism groups of rational circulant graphs through the use of Schur rings

The number of cyclic configurations of type $(v_{3})$ and the isomorphism problem