2 papers
math.CO2024
On 2-complexes embeddable in 4-space, and the excluded minors of their underlying graphs
Agelos Georgakopoulos, Martin Winter
We study the potentially undecidable problem of whether a given 2-dimensional CW complex can be embedded into . We provide operations that preserve embeddability, inc…
math.CO2023
The clique graphs of the hexagonal lattice -- an explicit construction and a short proof of divergence
Martin Winter
We present a new, explicit and very geometric construction for the iterated clique graphs of the hexagonal lattice which makes apparent its clique-divergence and she…