Hiroki Koike

most citedFlag Bicolorings, Pseudo-Orientations, and Double Covers of Maps

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

collaborators

3 papers

math.CO2013★ 2 cited

Flag Bicolorings, Pseudo-Orientations, and Double Covers of Maps

Hiroki Koike, Daniel Pellicer, Miguel Raggi +1

This paper discusses consistent flag bicolorings of maps and maniplexes, in their own right and as generalizations of orientations and pseudo-orientations. Furthermore, a related d…

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…

Flag Bicolorings, Pseudo-Orientations, and Double Covers of Maps

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

Isomorphic tetravalent cyclic Haar graphs

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