,
Julien Bensmail,
R. Bruce Richter
Creative Commons Attribution 3.0 Unported license
In the recent study of crossing numbers, drawings of graphs that can be extended to an arrangement of pseudolines (pseudolinear drawings) have played an important role as they are a natural combinatorial extension of rectilinear (or straight-line) drawings. A characterization of the pseudolinear drawings of K_n was found recently. We extend this characterization to all graphs, by describing the set of minimal forbidden subdrawings for pseudolinear drawings. Our characterization also leads to a polynomial-time algorithm to recognize pseudolinear drawings and construct the pseudolines when it is possible.
@InProceedings{arroyo_et_al:LIPIcs.SoCG.2020.9,
author = {Arroyo, Alan and Bensmail, Julien and Richter, R. Bruce},
title = {{Extending Drawings of Graphs to Arrangements of Pseudolines}},
booktitle = {36th International Symposium on Computational Geometry (SoCG 2020)},
pages = {9:1--9:14},
series = {Leibniz International Proceedings in Informatics (LIPIcs)},
ISBN = {978-3-95977-143-6},
ISSN = {1868-8969},
year = {2020},
volume = {164},
editor = {Cabello, Sergio and Chen, Danny Z.},
publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
address = {Dagstuhl, Germany},
URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.SoCG.2020.9},
URN = {urn:nbn:de:0030-drops-121672},
doi = {10.4230/LIPIcs.SoCG.2020.9},
annote = {Keywords: graphs, graph drawings, geometric graph drawings, arrangements of pseudolines, crossing numbers, stretchability}
}