Boundary actions on Bass-Serre trees yield new C*-simple groups among tubular groups, Out(BS(p,q)), and GBS_n groups, plus new purely infinite crossed products.
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Boundary actions of Bass-Serre Trees and the applications to $C^*$-algebras
Boundary actions on Bass-Serre trees yield new C*-simple groups among tubular groups, Out(BS(p,q)), and GBS_n groups, plus new purely infinite crossed products.