2 papers
math.CO2020
Excluded checkerboard colourable ribbon graph minors
Xia Guo, Xian'an Jin, Qi Yan
In this paper, we first introduce the notions of checkerboard colourable minors for ribbon graphs motivated by the Eulerian ribbon graph minors, and two kinds of bipartite minors f…
math.CO2020
Characterization of regular checkerboard colourable twisted duals of ribbon graphs
Xia Guo, Xian'an Jin, Qi Yan
The geometric dual of a cellularly embedded graph is a fundamental concept in graph theory and also appears in many other branches of mathematics. The partial dual is an essential…