Well-Quasi-Order of Relabel Functions
✍ Scribed by Jean Daligault; Michael Rao; Stéphan Thomassé
- Book ID
- 106489729
- Publisher
- Springer Netherlands
- Year
- 2010
- Tongue
- English
- Weight
- 455 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0167-8094
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract Let 𝒴 be a class of graphs and let ⪯ be the subgraph or the induced subgraph relation. We call ⪯ an __ideal__ (with respect to ⪯) if ⪯ implies that ⪯. In this paper, we study the ideals that are well‐quasiordered by ⪯. The following are our main results. If ⪯ is the subgraph relation, w
Let (X.U) be a quasi-uniform space and M, its Hausdorff quasi-uniformity defined on the collection PO(X) of all nonempty subsets of X. We show that (PO(X). U,) is compact if and only if (X.U) is compact and (X,,U-'IX,,) is hereditarily precompact where X,,, = {y E X: y is minimal in the (specializa