The isomorphism problem for small-rose generalized Baumslag-Solitar groups
arXiv:2310.00414
Abstract
A generalized Baumslag-Solitar group is a finitely generated group that acts on a tree with infinite-cyclic vertex and edge stabilizers. In this paper, we show that the isomorphism problem is solvable for small rose non-ascending generalized Baumslag- Solitar groups.
new example added, rewrote proof of Proposition 3.2 and proof of Theorem 5.1, incorporated changes suggested by referee, to appear in the Journal of Algebra