On joins and intersections of subgroups in free groups
classification
🧮 math.GR
math.GT
keywords
freegraphsintersectionsjoinslemmasubgroupsdisprovefinitely
read the original 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 M\"uller on these graphs and how to repair this lemma.
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