Hitting minors, subdivisions, and immersions in tournaments - Archive ouverte HAL
Article Dans Une Revue Discrete Mathematics and Theoretical Computer Science Année : 2018

Hitting minors, subdivisions, and immersions in tournaments

Résumé

The Erd\H{o}s-P\'osa property relates parameters of covering and packing of combinatorial structures and has been mostly studied in the setting of undirected graphs. In this note, we use results of Chudnovsky, Fradkin, Kim, and Seymour to show that, for every directed graph $H$ (resp. strongly-connected directed graph $H$), the class of directed graphs that contain $H$ as a strong minor (resp. butterfly minor, topological minor) has the vertex-Erd\H{o}s-P\'osa property in the class of tournaments. We also prove that if $H$ is a strongly-connected directed graph, the class of directed graphs containing $H$ as an immersion has the edge-Erd\H{o}s-P\'osa property in the class of tournaments.

Dates et versions

hal-01814499 , version 1 (13-06-2018)

Identifiants

Citer

Jean-Florent Raymond. Hitting minors, subdivisions, and immersions in tournaments. Discrete Mathematics and Theoretical Computer Science, 2018, 20 (1), pp.4212. ⟨10.23638/DMTCS-20-1-5⟩. ⟨hal-01814499⟩
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