A note on higher coherence of graphs of groups

Kevin Li, Luis Jorge Sánchez Saldaña

For $n\in \mathbb{N}$, a group is called $n$-coherent if every subgroup of type ${\mathsf{F}}_n$ is of type ${\mathsf{F}}_{n+1}$. For $n\ge 1$, we observe that graphs of groups with $n…