2 papers
math.CO2020
On -flow-critical graphs
Jiaao Li, Yulai Ma, Yongtang Shi +2
A bridgeless graph is called -flow-critical if it does not admit a nowhere-zero -flow, but has for any . Tutte's -flow conjecture can be equivalently…
math.CO2018
Minimum -Joins and Signed-Circuit Covering
Yezhou Wu, Dong Ye
Let be a graph and be a vertex subset of with even cardinality. A -join of is a subset of edges such that a vertex of is incident with an odd number of e…