License: Creative Commons Attribution 4.0 International license (CC BY 4.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.SoCG.2023.40
URN: urn:nbn:de:0030-drops-178909
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Holm, Jacob ; van der Hoog, Ivor ; Rotenberg, Eva

Worst-Case Deterministic Fully-Dynamic Biconnectivity in Changeable Planar Embeddings

LIPIcs-SoCG-2023-40.pdf (1 MB)


We study dynamic planar graphs with n vertices, subject to edge deletion, edge contraction, edge insertion across a face, and the splitting of a vertex in specified corners. We dynamically maintain a combinatorial embedding of such a planar graph, subject to connectivity and 2-vertex-connectivity (biconnectivity) queries between pairs of vertices. Whenever a query pair is connected and not biconnected, we find the first and last cutvertex separating them.
Additionally, we allow local changes to the embedding by flipping the embedding of a subgraph that is connected by at most two vertices to the rest of the graph.
We support all queries and updates in deterministic, worst-case, O(logĀ² n) time, using an O(n)-sized data structure.

BibTeX - Entry

  author =	{Holm, Jacob and van der Hoog, Ivor and Rotenberg, Eva},
  title =	{{Worst-Case Deterministic Fully-Dynamic Biconnectivity in Changeable Planar Embeddings}},
  booktitle =	{39th International Symposium on Computational Geometry (SoCG 2023)},
  pages =	{40:1--40:18},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-273-0},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{258},
  editor =	{Chambers, Erin W. and Gudmundsson, Joachim},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{},
  URN =		{urn:nbn:de:0030-drops-178909},
  doi =		{10.4230/LIPIcs.SoCG.2023.40},
  annote =	{Keywords: dynamic graphs, planarity, connectivity}

Keywords: dynamic graphs, planarity, connectivity
Collection: 39th International Symposium on Computational Geometry (SoCG 2023)
Issue Date: 2023
Date of publication: 09.06.2023

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