45 citations · 494 across the 40 of their papers we have counts for
4 papers · 1 filter
Handle slides for delta-matroids
Iain Moffatt, Eunice Mphako-Banda
A classic exercise in the topology of surfaces is to show that, using handle slides, every disc-band surface, or 1-vertex ribbon graph, can be put in a canonical form consisting of…
Hopf algebras and Tutte polynomials
Thomas Krajewski, Iain Moffatt, Adrian Tanasa
By considering Tutte polynomials of Hopf algebras, we show how a Tutte polynomial can be canonically associated with combinatorial objects that have some notions of deletion and co…
On the ribbon graphs of links in real projective space
Iain Moffatt, Johanna Strömberg
Every link diagram can be represented as a signed ribbon graph. However, different link diagrams can be represented by the same ribbon graphs. We determine how checkerboard coloura…
Ribbon graph minors and low-genus partial duals
Iain Moffatt
We give an excluded minor characterisation of the class of ribbon graphs that admit partial duals of Euler genus at most one.