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Free actions on \(\mathbb{R}\)-trees. (English) Zbl 0803.20017

Summary: We characterize the free minimal actions of finitely generated groups on \(\mathbb{R}\)-trees in terms of certain equivalence relations on compact metric graphs.

MSC:

20E08 Groups acting on trees
05C25 Graphs and abstract algebra (groups, rings, fields, etc.)
20F05 Generators, relations, and presentations of groups
05C05 Trees
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