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Forbidden directed minors and Kelly-width.
Theoretical Computer Science, (2017): 40-47
Partial k-DAGs are generalizations of partial k-trees. Partial k-trees are undirected graphs with bounded treewidth, whereas partial k-DAGs are digraphs with bounded Kelly-width. It is well-known that an undirected graph is a partial 1-tree if and only if it has no K3 minor. In this paper, we prove that partial 1-DAGs are characterized by...More
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