New Examples of Groups Acting on Real Trees
نویسنده
چکیده
We construct the first example of a finitely generated group which has Serre’s property (FA) (i.e., whenever it acts on a simplicial tree it fixes a vertex), but admits a fixed point-free action on an R-tree with finite arc stabilizers. We also give a short and elementary construction of finitely generated groups that have property (FA) but do not have (FR).
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تاریخ انتشار 2015