• Media type: E-Article; Text
  • Title: Graph Planarity by Replacing Cliques with Paths
  • Contributor: Angelini, Patrizio [Author]; Eades, Peter [Author]; Hong, Seok-Hee [Author]; Klein, Karsten [Author]; Kobourov, Stephen [Author]; Liotta, Giuseppe [Author]; Navarra, Alfredo [Author]; Tappini, Alessandra [Author]
  • imprint: KOPS - The Institutional Repository of the University of Konstanz, 2020-08-13
  • Published in: Algorithms. MDPI. 2020, 13(8), 194. eISSN 1999-4893. Available under: doi:10.3390/a13080194
  • Language: English
  • DOI: https://doi.org/10.3390/a13080194
  • ISBN: 1734927542
  • Keywords: NP-hardness ; k-planarity ; cliques ; paths ; planar graphs ; polynomial time reduction
  • Origination:
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  • Description: This paper introduces and studies the following beyond-planarity problem, which we call h-Clique2Path Planarity. Let G be a simple topological graph whose vertices are partitioned into subsets of size at most h, each inducing a clique. h-Clique2Path Planarity asks whether it is possible to obtain a planar subgraph of G by removing edges from each clique so that the subgraph induced by each subset is a path. We investigate the complexity of this problem in relation to k-planarity. In particular, we prove that h-Clique2Path Planarity is NP-complete even when h=4 and G is a simple 3-plane graph, while it can be solved in linear time when G is a simple 1-plane graph, for any value of h. Our results contribute to the growing fields of hybrid planarity and of graph drawing beyond planarity. ; published
  • Access State: Open Access
  • Rights information: Attribution (CC BY)