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Train track maps on graphs of groups - MaRDI portal

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Train track maps on graphs of groups

From MaRDI portal
Publication:6359889

DOI10.4171/GGD/698arXiv2102.02848MaRDI QIDQ6359889

Author name not available (Why is that?)

Publication date: 4 February 2021

Abstract: In this paper we develop the theory of train track maps on graphs of groups. Expanding a definition of Bass, we define a notion of a map of a graph of groups, and of a homotopy equivalence. We prove that under one of two technical hypotheses, any homotopy equivalence of a graph of groups may be represented by a relative train track map. The first applies in particular to graphs of groups with finite edge groups, while the second applies in particular to certain generalized Baumslag-Solitar groups.





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