Atomic embeddability, clustered planarity, and thickenability

R Fulek, CD Tóth - ACM Journal of the ACM (JACM), 2022 - dl.acm.org
We study the atomic embeddability testing problem, which is a common generalization of
clustered planarity (c-planarity, for short) and thickenability testing, and present a polynomial …

Geometric embeddability of complexes is∃ R-complete

M Abrahamsen, L Kleist, T Miltzow - of the ACM, 2025 - dl.acm.org
For now almost 100 years, much attention has been devoted to studying embeddings of
complexes [8, 21, 32, 33, 43, 56, 68, 70]. Typical types of embeddings include geometric …

Synchronized planarity with applications to constrained planarity problems

T Bläsius, SD Fink, I Rutter - ACM Transactions on Algorithms, 2023 - dl.acm.org
We introduce the problem Synchronized Planarity. Roughly speaking, its input is a loop-free
multi-graph together with synchronization constraints that, eg, match pairs of vertices of …

Embedding simply connected 2-complexes in 3-space

J Carmesin - arXiv preprint arXiv:2309.15504, 2023 - arxiv.org
Firstly, we characterise the embeddability of simply connected locally 3-connected 2-
dimensional simplicial complexes in 3-space in a way analogous to Kuratowski's …

Embedding simply connected 2-complexes in 3-space--II. Rotation systems

J Carmesin - arXiv preprint arXiv:1709.04643, 2017 - arxiv.org
arXiv:1709.04643v3 [math.CO] 4 Sep 2019 Page 1 Embedding simply connected 2-complexes
in 3-space II. Rotation systems Johannes Carmesin University of Birmingham September 5 …

Catching a robber on a random k-uniform hypergraph

J Erde, M Kang, F Lehner, B Mohar… - Canadian Journal of …, 2023 - cambridge.org
The game of Cops and Robber is usually played on a graph, where a group of cops attempt
to catch a robber moving along the edges of the graph. The cop number of a graph is the …

Multibranched Surfaces in 3-Manifolds.

M Ozawa - Journal of Mathematical Sciences, 2021 - go.gale.com
MULTIBRANCHED SURFACES IN 3-MANIFOLDS. - Document - Gale Academic OneFile Use
this link to get back to this page. Copy Skip to Content Library Menu: Google Scholar …

[HTML][HTML] Coloring hypergraphs with excluded minors

R Steiner - European Journal of Combinatorics, 2024 - Elsevier
Hadwiger's conjecture, among the most famous open problems in graph theory, states that
every graph that does not contain K t as a minor is properly (t− 1)-colorable. The purpose of …

Forbidden complexes for the 3-sphere

M Eudave-Muñoz, M Ozawa - arXiv preprint arXiv:2403.18279, 2024 - arxiv.org
A simplicial complex is said to be {\em critical}(or {\em forbidden}) for the 3-sphere $ S^ 3$ if
it cannot be embedded in $ S^ 3$ but after removing any one point, it can be embedded. We …

Outerspatial 2-complexes: Extending the class of outerplanar graphs to three dimensions

J Carmesin, T Mihaylov - arXiv preprint arXiv:2103.15404, 2021 - arxiv.org
We introduce the class of outerspatial 2-complexes as the natural generalisation of the class
of outerplanar graphs to three dimensions. Answering a question of O-joung Kwon, we …