Induced subgraphs of graphs with large chromatic number. XI. orientations

Fix an oriented graph , and let be a graph with bounded clique number and very large chromatic number. If we somehow orient its edges, must there be an induced subdigraph isomorphic to ? Kierstead and Rödl (1996) raised this question for two specific kinds of digraph : the three-edge path, with the...

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Bibliographic Details
Main Authors: Chudnovsky, M, Scott, A, Seymour, P
Format: Journal article
Published: Elsevier 2018