12 citations · 78 across the 26 of their papers we have counts for
4 papers · 1 filter
Connectivity Functions and Polymatroids
Susan Jowett, Songbao Mo, Geoff Whittle
A {\em connectivity function on} a set is a function such that , that for all and that $λ(X\cap Y)+λ(X…
Excluded minors are almost fragile
Nick Brettell, Ben Clark, James Oxley +2
Let be an excluded minor for the class of -representable matroids for some partial field , and let be a -connected strong -stabilizer…
Tangles and the Mona Lisa
Reinhard Diestel, Geoff Whittle
We show how an image can, in principle, be described by the tangles of the graph of its pixels. The tangle-tree theorem provides a nested set of separations that efficiently distin…
On recognising frame and lifted-graphic matroids
Rong Chen, Geoff Whittle
We prove that there is no polynomial with the property that a matroid can be determined to be either a lifted-graphic or frame matroid using at most rank ev…