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The acyclic disconnection of a digraph. (English) Zbl 0928.05033
The author introduces a new invariant of digraphs: the acyclic disconnection of a digraph $$D$$ is the minimum number of connected components of the subgraphs obtained from $$D$$ by deleting an acyclic set of arcs. Some results are obtained about this invariant, in general, and for circulant tournaments, in particular.
Reviewer: G.Gutin (Odense)

##### MSC:
 05C20 Directed graphs (digraphs), tournaments 05C15 Coloring of graphs and hypergraphs
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##### References:
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