2 papers
math.CO2025
Characterizing real-representable matroids with large average hyperplane-size
Rutger Campbell, Matthew E. Kroeker, Ben Lund
Generalizing a theorem of the first two authors and Geelen for planes, we show that, for a real-representable matroid , either the average hyperplane-size in is at most a co…
math.CO2025
Metric graphs of negative type
Rutger Campbell, Kevin Hendrey, Ben Lund +1
The negative type inequalities of a metric space are closely tied to embeddability. A result by Gupta, Newman, and Rabinovich implies that if a metric graph does not contain a…