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Polynomial Kernel for Immersion Hitting in Tournaments

Authors Łukasz Bożyk , Michał Pilipczuk

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Author Details

Łukasz Bożyk
  • University of Warsaw, Poland
Michał Pilipczuk
  • University of Warsaw, Poland

Funding

This work is a part of projects that have received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme, grant agreements No. 714704 (Ł. Bożyk) and No. 948057 (Mi. Pilipczuk).

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Łukasz Bożyk and Michał Pilipczuk. Polynomial Kernel for Immersion Hitting in Tournaments. In 30th Annual European Symposium on Algorithms (ESA 2022). Leibniz International Proceedings in Informatics (LIPIcs), Volume 244, pp. 26:1-26:17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2022) https://doi.org/10.4230/LIPIcs.ESA.2022.26

Abstract

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.

Subject Classification

ACM Subject Classification
  • Theory of computation → Parameterized complexity and exact algorithms
Keywords
  • kernelization
  • graph immersion
  • tournament
  • protrusion

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