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Tournament minors. (English) Zbl 1310.05109
Summary: We say a digraph \(G\) is a minor of a digraph \(H\) if \(G\) can be obtained from a subdigraph of \(H\) by repeatedly contracting a strongly-connected subdigraph to a vertex. Here, we show that the class of all tournaments is a well-quasi-order under minor containment.

05C20 Directed graphs (digraphs), tournaments
05C83 Graph minors
Full Text: DOI arXiv
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