Proves NP-hardness of determining if an oriented graph has degreewidth at most 1, settling the last open case for oriented graphs.
Computing the clique number of tournaments
1 Pith paper cite this work. Polarity classification is still indexing.
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Computing the degreewidth of a digraph is hard
Proves NP-hardness of determining if an oriented graph has degreewidth at most 1, settling the last open case for oriented graphs.