7 citations · 10 across the 6 of their papers we have counts for
Showing 2009Show all
2 papers · 1 filter
cs.DM2009★ 2 cited
Regular Matroids with Graphic Cocircuits
Konstantinos Papalamprou, Leonidas Pitsoulis
We introduce the notion of graphic cocircuits and show that a large class of regular matroids with graphic cocircuits belongs to the class of signed-graphic matroids. Moreover, we…
math.CO2009★ 7 cited
On the representability of totally unimodular matrices on bidirected graphs
L. Pitsoulis, K. Papalamprou, G. Appa +1
Seymour's famous decomposition theorem for regular matroids states that any totally unimodular (TU) matrix can be constructed through a series of composition operations called -…