The dichromatic number χ⃗(D) of a digraph D is the minimum number
of col...
The inversion of a set X of vertices in a digraph D consists of
reversin...
Given two k-dicolourings of a digraph D, we prove that it is
PSPACE-comp...
The inversion of a set X of vertices in a digraph D consists in
reversin...
The dichromatic number (D) of a digraph D is the least integer k
such th...
Let D be an oriented graph. The inversion of a set X of vertices in D
co...
In this paper, we give bounds on the dichromatic number χ⃗(Σ)
of a surfa...
A digraph is eulerian if it is connected and every vertex has its in-deg...
A digraph is n-unavoidable if it is contained in every tournament of
or...