2 papers
math.CO2025
Clonal cores and flexipaths in matroids
Nick Brettell, James Oxley, Charles Semple +1
A partitioned matroid consists of a matroid and a partition of its ground set. As such structures arise frequently in struc…
math.CO2025
What is a 4-connected matroid?
Nick Brettell, Susan Jowett, James Oxley +2
The {\em breadth} of a tangle in a matroid is the size of the largest spanning uniform submatroid of the tangle matroid of . A matroid is {\em weakly…