Outpath

Outpath --- выходящий путь.

An outpath of a vertex [math]\displaystyle{ x }[/math] (an arc [math]\displaystyle{ (x,y) }[/math], respectively) in a digraph is a path starting at [math]\displaystyle{ x }[/math] ([math]\displaystyle{ (x,y) }[/math], respectively) such that [math]\displaystyle{ x }[/math] dominates the endvertex of a path only if the endvertex also dominates [math]\displaystyle{ x }[/math]. An outpath of length [math]\displaystyle{ k }[/math] is called a [math]\displaystyle{ k- }[/math]outpath.