Weak-odd chromatic index of special digraph classes

Ruijuan Gu, Hui Lei, Xiaopan Lian +1

Give a digraph $D=(V(D),A(D))$, let ${\partial }_D^{+}(v)=\{vw|w\in N_D^{+}(v)\}$ and ${\partial }_D^{-}(v)=\{uv|u\in N_D^{-}(v)\}$ be semi-cuts of $v$. A mapping $\phi :A(D)\to [k]$ is call…