Abstract
The question of whether ribbon-disc complements-or, equivalently, standard 2-complexes over labelled oriented trees-are aspherical is of great importance for Whitehead's asphericity conjecture and, if solved affirmatively, would imply a combinatorial proof of the asphericity of knot complements. W e present here two classes of diagrammatically reducible labelled oriented trees.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 285-294 |
| Number of pages | 10 |
| Journal | Proceedings of the Edinburgh Mathematical Society |
| Volume | 44 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2001 |
Keywords
- 2-complexes
- Asphericity
- Knot groups
- Labelled oriented trees
ASJC Scopus subject areas
- General Mathematics