For a fixed simple digraph H without isolated vertices, we consider the problem of deleting arcs from a given tournament to get a digraph which does not contain H as an immersion. We prove that for every H, this problem admits a polynomial kernel when parameterized by the number of deleted arcs. The degree of the bound on the kernel size depends on H.
@InProceedings{bozyk_et_al:LIPIcs.ESA.2022.26, author = {Bo\.{z}yk, {\L}ukasz and Pilipczuk, Micha{\l}}, title = {{Polynomial Kernel for Immersion Hitting in Tournaments}}, booktitle = {30th Annual European Symposium on Algorithms (ESA 2022)}, pages = {26:1--26:17}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-247-1}, ISSN = {1868-8969}, year = {2022}, volume = {244}, editor = {Chechik, Shiri and Navarro, Gonzalo and Rotenberg, Eva and Herman, Grzegorz}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ESA.2022.26}, URN = {urn:nbn:de:0030-drops-169642}, doi = {10.4230/LIPIcs.ESA.2022.26}, annote = {Keywords: kernelization, graph immersion, tournament, protrusion} }
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