2 papers
math.CO2017
Shorter signed circuit covers of graphs
Tomáš Kaiser, Robert Lukot'ka, Edita Máčajová +1
A signed circuit is a minimal signed graph (with respect to inclusion) that admits a nowhere-zero flow. We show that each flow-admissible signed graph on edges can be covered b…
cs.DS2013
Linear-Time Algorithms for Scattering Number and Hamilton-Connectivity of Interval Graphs
Hajo Broersma, Jiří Fiala, Petr A. Golovach +3
Hung and Chang showed that for all k>=1 an interval graph has a path cover of size at most k if and only if its scattering number is at most k. They also showed that an interval gr…