J Kessler, JM Schmidt - Journal of Combinatorial Theory, Series B, 2024 - Elsevier
A cycle C of a graph G is isolating if every component of G− V (C) consists of a single vertex. We show that isolating cycles in polyhedral graphs can be extended to larger ones: every …
M Wigal, X Yu - arXiv preprint arXiv:2003.09750, 2020 - arxiv.org
Tutte proved that every 4-connected planar graph contains a Hamilton cycle, but there are 3- connected $ n $-vertex planar graphs whose longest cycles have length $\Theta …
I Fabrici, J Harant, S Mohr, JM Schmidt - arXiv preprint arXiv:1806.09413, 2018 - arxiv.org
A planar graph is essentially $4 $-connected if it is 3-connected and every of its 3-separators is the neighborhood of a single vertex. Jackson and Wormald proved that every essentially 4 …
“One of the deepest unsolved problems in graph theory is the following conjecture due to Hadwiger [...].” These words were chosen by Béla Bollobás, Paul Allen Catlin, and Paul …