Abstract
We study graphs of (generalized) joins and intersections of finitely generated subgroups of a free group. We show how to disprove a lemma of Imrich and Müller on these graphs, how to repair the lemma and how to utilize it.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1-18 |
| Number of pages | 18 |
| Journal | Journal of Combinatorial Algebra |
| Volume | 2 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2018 |
Keywords
- Free groups
- Intersections
- Joins of subgroups
- Stallings graphs
ASJC Scopus subject areas
- Algebra and Number Theory
- Discrete Mathematics and Combinatorics