Equivalence of edge bicolored graphs on surfaces [article]

Oliver T. Dasbach, Heather M. Russell
2018 arXiv   pre-print
Consider the collection of edge bicolorings of a graph that is cellularly embedded on an orientable surface. In this work, we count the number of equivalence classes of such colorings under two relations: reversing colors around a face and reversing colors around a vertex. In the case of the plane, this is well studied, but for other surfaces, the computation is more subtle. While this question can be stated purely graph theoretically, it has interesting applications in knot theory.
arXiv:1802.03506v1 fatcat:k5mduh5cgvdapm3auv26p3kele