Gap-planar graphs

Sang Won Bae, Jean Francois Baffier, Jinhee Chun, Peter Eades, Kord Eickmeyer, Luca Grilli, Seok Hee Hong, Cozzetti Matias Korman, Fabrizio Montecchiani, Ignaz Rutter, Csaba D. Tóth

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


We introduce the family of k-gap-planar graphs for k≥0, i.e., graphs that have a drawing in which each crossing is assigned to one of the two involved edges and each edge is assigned at most k of its crossings. This definition is motivated by applications in edge casing, as a k-gap-planar graph can be drawn crossing-free after introducing at most k local gaps per edge. We present results on the maximum density of k-gap-planar graphs, their relationship to other classes of beyond-planar graphs, characterization of k-gap-planar complete graphs, and the computational complexity of recognizing k-gap-planar graphs.

Original languageEnglish
Pages (from-to)36-52
Number of pages17
JournalTheoretical Computer Science
Publication statusPublished - 2018 Oct 12


  • Beyond planarity k-gap-planar graphs
  • Complete graphs
  • Density results
  • Recognition problem
  • k-planar graphs
  • k-quasiplanar graphs

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)


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