Cop-width, flip-width and strong colouring numbers
Cop-width and flip-width are new families of graph parameters introduced by Toru\'nczyk (2023) that generalise treewidth, degeneracy, generalised colouring numbers, clique-width and twin-width. In this paper, we bound the cop-width and flip-width of a graph by its strong colouring numbers. In particular, we show that for every $r\in \mathbb{N}$, every graph $G$ has $\text{copwidth}_r(G)\leq \text{scol}_{4r}(G)$. This implies that every class of graphs with linear strong colouring numbers has linear cop-width and linear flip-width. We use this result to deduce improved bounds for cop-width and flip-width for various sparse graph classes.
Authors
- Robert Hickingbotham (ORCID: https://orcid.org/0009-0007-1817-8295)
Publication Details
- Journal
- Discrete Mathematics & Theoretical Computer Science
- Published
- 2025-05-07
- DOI
- https://doi.org/10.46298/dmtcs.14976
- Primary Topic
- Advanced Graph Theory Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Australian Government