Forbidding Kuratowski Graphs as Immersions - LIRMM - Laboratoire d’Informatique, de Robotique et de Microélectronique de Montpellier Access content directly
Journal Articles Journal of Graph Theory Year : 2015

Forbidding Kuratowski Graphs as Immersions


The immersion relation is a partial ordering relation on graphs that is weaker than the topological minor relation in the sense that if a graph $G$ contains a graph $H$ as a topological minor, then it also contains it as an immersion but not vice versa. Kuratowski graphs, namely $K_{5}$ and $K_{3,3}$, give a precise characterization of planar graphs when excluded as topological minors. In this note we give a structural characterization of the graphs that exclude Kuratowski graphs as immersions. We prove that they can be constructed by applying consecutive $i$-edge-sums, for $i\leq 3$, starting from graphs that are planar sub-cubic or of branch-width at most 10.

Dates and versions

lirmm-00904533 , version 1 (14-11-2013)



Archontia C. Giannopoulou, Marcin Kaminski, Dimitrios M. Thilikos. Forbidding Kuratowski Graphs as Immersions. Journal of Graph Theory, 2015, 78 (1), pp.43-60. ⟨10.1002/jgt.21790⟩. ⟨lirmm-00904533⟩
146 View
0 Download



Gmail Mastodon Facebook X LinkedIn More