On joins and intersections of subgroups in free groups

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.

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Veröffentlicht in:Journal of combinatorial algebra 2018-01, Vol.2 (1), p.1-18
1. Verfasser: Ivanov, Sergei V.
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:2415-6302
2415-6310
DOI:10.4171/jca/2-1-1